Year Membership
1923 1.200
1924 2.400
1925 5.000
1926 6.000
1927 8.000
1928 10.000
1929 13.000
1930 26.000
1931 63.700
1932 107.956
1933 2.292.041
1934 3.577.565
1935 3.943.303
1936 5.437.601
1937 5.879.955
1938 7.031.226
1939 7.728.259

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