Download: Historic Membership Count by Month (PDF: 46 KB)
Download: Historic Membership Count by State (PDF: 157 KB)
The following is the member count and association count from 1908 onwards.
|
|
|
|
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1908
|
20
|
1,646
|
|
1909
|
15
|
1,646
|
|
1910
|
19
|
2,164
|
|
1911
|
43
|
3,000
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|
1912
|
68
|
4,700
|
|
1913
|
83
|
6,000
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|
1914
|
93
|
6,000
|
|
1915
|
91
|
6,000
|
|
1916
|
113
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6,000
|
|
1917
|
128
|
6,417
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|
1918
|
149
|
6,700
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|
1919
|
167
|
7,500
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|
1920
|
225
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10,077
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|
1921
|
385
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15,262
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|
1922
|
470
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16,377
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|
1923
|
475
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17,504
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|
1924
|
493
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19,435
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|
1925
|
529
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20,729
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|
1926
|
606
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24,166
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1927
|
633
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23,148
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|
1928
|
614
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21,403
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1929
|
625
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20,174
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|
1930
|
600
|
18,918
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|
1931
|
582
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16,798
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|
1932
|
532
|
13,046
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|
1933
|
511
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12,769
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|
1934
|
425
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13,328
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|
1935
|
425
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10,513
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|
1936
|
431
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11,688
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|
1937
|
430
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12,724
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|
1938
|
455
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13,619
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|
1939
|
466
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13,824
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|
1940
|
458
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14,162
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|
1941
|
467
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14,859
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|
1942
|
485
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15,632
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|
1943
|
585
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18,069
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|
1944
|
622
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20,083
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|
1945
|
759
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26,797
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|
1946
|
782
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28,488
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|
1947
|
822
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35,241
|
|
1948
|
981
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40,724
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|
1949
|
1,074
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43,534
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1950
|
1,099
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43,503
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|
1951
|
1,122
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44,520
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1952
|
1,125
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47,224
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1953
|
1,135
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49,678
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1954
|
1,150
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51,574
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1955
|
1,185
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53,689
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1956
|
1,214
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59,740
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1957
|
1,238
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61,645
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1958
|
1,310
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63,500
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1959
|
1,347
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66,644
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1960
|
1,370
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68,818
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1961
|
1,386
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70,690
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1962
|
1,410
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73,029
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1963
|
1,445
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75,552
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1964
|
1,473
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79,396
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1965
|
1,496
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82,234
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1966
|
1,518
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84,583
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1967
|
1,535
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84,971
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1968
|
1,550
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87,871
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1969
|
1,573
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91,625
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1970
|
1,589
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94,625
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1971
|
1,604
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99,382
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1972
|
1,619
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108,944
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1973
|
1,627
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117,965
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1974
|
1,635
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134,362
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1975
|
1,659
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435,485
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1976
|
1,677
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485,806
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1977
|
1,700
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570,470
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1978
|
1,728
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683,464
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1979
|
1,741
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755,650
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1980
|
1,806
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761,391
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1981
|
1,841
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695,108
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1982
|
1,892
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617,521
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1983
|
1,919
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627,444
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1984
|
2,012
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682,839
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1985
|
2,026
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711,226
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1986
|
1,996
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770,885
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1987
|
2,004
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806,351
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1988
|
1,983
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808,809
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1989
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1,954
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822,935
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1990
|
1,922
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810,607
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1991
|
1,887
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763,965
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1992
|
1,830
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743,921
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1993
|
1,788
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729,266
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1994
|
1,752
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729,397
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1995
|
1,753
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719,673
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1996
|
1,684
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718,599
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1997
|
1,569
|
716,078
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1998
|
1,481
|
718,483
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1999
|
1,539
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761,181
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2000
|
1,524
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766,560
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2001
|
1,502
|
803,803
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2002
|
1,485
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876,195
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2003
|
1,471
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976,960
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2004
|
1,453
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1,102,250
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2005
|
1,445
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1,265,367
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2006
|
1,442
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1,357,732
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2007
|
1,443
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1,338,001
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2008
|
1,437
|
1,197,529
|
| 2009 | 1,420 | 1,112,645 |
| 2010 | 1,408 | 1,066,658 |
| 2011 | 1,387 | 1,009,940 |
| 2012 | 1,379 | 999,824 |
| 2013 | 1,365 | 1,042,231 |
| 2014 | 1,341 | 1,099,102 |
| 2015 | 1,222 | 1,167,595 |
| 2016 | 1,178 | 1,233,704 |
| 2017 | 1,165 | 1,308,616 |
| 2018 | 1,148 | 1,359,208 |
| 2019 | 1,124 | 1,403,128 |
| 2020 | 1,108 | 1,458,661 |
| 2021 | 1,090 | 1,559,537 |
| 2022 | 1,075 | 1,580,971 |
| 2023 |