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| Membership History |
| Year | Admitted & Restored | Initiated | Suspended | Resigned | Deceased | Net Change | Prior Year Adjustment | Dec 27 Total |
| 1948 | 891 | 11,215 | (479) | (371) | (4,060) | 7,196 | 0 | 217,581 |
| 1949 | 1,417 | 10,566 | (458) | (878) | (4,032) | 6,615 | 0 | 224,196 |
| 1950 | 719 | 9,882 | (569) | (347) | (4,219) | 5,466 | 0 | 229,662 |
| 1951 | 718 | 9,743 | (611) | (345) | (4,340) | 5,165 | 0 | 234,827 |
| 1952 | 648 | 9,916 | (649) | (335) | (4,575) | 5,005 | 0 | 239,832 |
| 1953 | 635 | 9,904 | (646) | (370) | (4,651) | 4,872 | 0 | 244,704 |
| 1954 | 977 | 9,171 | (626) | (749) | (4,645) | 4,128 | 0 | 248,832 |
| 1955 | 575 | 8,975 | (746) | (416) | (4,814) | 3,574 | 0 | 252,406 |
| 1956 | 716 | 8,720 | (919) | (734) | (4,937) | 2,846 | 0 | 255,252 |
| 1957 | 690 | 7,915 | (1,026) | (574) | (5,252) | 1,753 | 0 | 257,005 |
| 1958 | 615 | 6,746 | (1,275) | (611) | (5,217) | 258 | 0 | 257,263 |
| 1959 | 833 | 6,554 | (1,196) | (483) | (5,260) | 448 | 0 | 257,711 |
| 1960 | 613 | 6,852 | (1,018) | (643) | (5,600) | 204 | 0 | 257,915 |
| 1961 | 1,094 | 5,961 | (1,269) | (980) | (5,374) | (568) | 0 | 257,347 |
| 1962 | 636 | 5,864 | (1,392) | (638) | (5,684) | (1,214) | 0 | 256,133 |
| 1963 | 823 | 5,666 | (1,378) | (681) | (5,950) | (1,520) | 0 | 254,613 |
| 1964 | 931 | 5,805 | (1,238) | (810) | (5,627) | (939) | 0 | 253,674 |
| 1965 | 885 | 5,930 | (1,115) | (855) | (5,855) | (1,010) | 0 | 252,664 |
| 1966 | 617 | 5,730 | (1,229) | (602) | (6,050) | (1,534) | 0 | 251,130 |
| 1967 | 719 | 5,455 | (1,239) | (698) | (5,997) | (1,760) | 0 | 249,370 |
| 1968 | 833 | 5,316 | (1,236) | (767) | (6,203) | (2,057) | 0 | 247,313 |
| 1969 | 648 | 5,041 | (1,268) | (591) | (6,123) | (2,293) | 0 | 245,020 |
| 1970 | 610 | 4,734 | (1,305) | (635) | (6,034) | (2,630) | 0 | 242,390 |
| 1971 | 828 | 4,689 | (1,468) | (741) | (6,018) | (2,710) | 2 | 239,682 |
| 1972 | 1,515 | 4,733 | (1,392) | (684) | (6,128) | (1,956) | (894) | 236,832 |
| 1973 | 739 | 5,003 | (1,138) | (639) | (6,199) | (2,234) | 0 | 234,598 |
| 1974 | 694 | 4,860 | (1,389) | (735) | (5,889) | (2,459) | 0 | 232,139 |
| 1975 | 805 | 4,872 | (1,194) | (828) | (5,809) | (2,154) | (94) | 229,891 |
| 1976 | 687 | 4,918 | (1,327) | (705) | (5,801) | (2,228) | 0 | 227,663 |
| 1977 | 684 | 4,044 | (1,200) | (655) | (5,769) | (2,896) | 2 | 224,769 |
| 1978 | 666 | 3,685 | (1,359) | (761) | (5,628) | (3,397) | 25 | 221,397 |
| 1979 | 851 | 3,699 | (1,553) | (611) | (5,497) | (3,111) | 0 | 218,286 |
| 1980 | 667 | 3,634 | (1,708) | (667) | (5,535) | (3,609) | (332) | 214,345 |
| 1981 | 691 | 3,488 | (1,848) | (737) | (5,606) | (4,012) | (66) | 210,267 |
| 1982 | 671 | 3,280 | (1,945) | (776) | (5,449) | (4,219) | (21) | 206,027 |
| 1983 | 684 | 3,432 | (1,756) | (649) | (5,483) | (3,772) | (14) | 202,241 |
| 1984 | 643 | 4,364 | (2,167) | (511) | (4,194) | (1,865) | 21 | 200,397 |
| 1985 | 539 | 4,871 | (4,241) | (809) | (5,076) | (4,716) | (1,768) | 193,913 |
| 1986 | 564 | 3,523 | (1,617) | (710) | (5,158) | (3,398) | (154) | 190,361 |
| 1987 | 555 | 3,414 | (985) | (734) | (4,794) | (2,544) | (448) | 187,369 |
| 1988 | 567 | 3,136 | (1,745) | (728) | (4,730) | (3,500) | (465) | 183,404 |
| 1989 | 502 | 3,035 | (1,636) | (712) | (4,585) | (3,396) | (323) | 179,685 |
| 1990 | 522 | 2,869 | (1,342) | (700) | (4,311) | (2,962) | (449) | 176,274 |
| 1991 | 489 | 2,532 | (1,367) | (718) | (4,239) | (3,303) | (429) | 172,542 |
| 1992 | 446 | 2,374 | (1,719) | (801) | (4,333) | (4,033) | (402) | 168,107 |
| 1993 | 549 | 2,003 | (1,384) | (762) | (4,248) | (3,842) | (340) | 163,925 |
| 1994 | 476 | 2,798 | (1,429) | (628) | (4,274) | (3,057) | (488) | 160,380 |
| 1995 | 394 | 2,718 | (1,254) | (628) | (4,184) | (2,954) | (430) | 156,996 |
| 1996 | 392 | 2,232 | (1,356) | (481) | (3,496) | (2,709) | (532) | 153,755 |
| 1997 | 433 | 3,131 | (1,416) | (570) | (4,014) | (2,436) | (566) | 150,753 |
| 1998 | 439 | 2,356 | (1,295) | (565) | (3,927) | (2,992) | (264) | 147,497 |
| 1999 | 540 | 2,168 | (1,280) | (551) | (4,308) | (3,431) | 616 | 144,682 |
| 2000 | 504 | 1,901 | (1,324) | (511) | (3,844) | (3,274) | (1,351) | 140,057 |
| 2001 | 567 | 1,837 | (1,153) | (429) | (3,659) | (2,837) | 657 | 137,877 |
| 2002 | 586 | 2,154 | (1,236) | (616) | (3,811) | (2,923) | (1,278) | 133,676 |
| 2003 | 497 | 1,945 | (1,509) | (566) | (3,730) | (3,363) | (397) | 129,916 |
| 2004 | 736 | 5,384 | (2,209) | (861) | (3,572) | (522) | (508) | 128,886 |
| 2005 | 591 | 2,658 | (2,344) | (601) | (3,582) | (3,278) | 214 | 125,822 |
| 2006 | 579 | 2,106 | (1,031) | (630) | (3,348) | (2,324) | (222) | 123,276 |
| 2007 | 615 | 2,362 | (1,378) | (589) | (3,442) | (2,432) | (342) | 120,502 |
| 2008 | 581 | 2,173 | (1,601) | (544) | (3,266) | (2,657) | (261) | 117,584 |
| 2009 | 705 | 2,047 | (1,685) | (617) | (3,214) | (2,764) | (373) | 114,447 |
| 2010 | 1,401 | 4,436 | (2,033) | (352) | (3,011) | 441 | (1,609) | 113,279 |
| 2011 | 1,095 | 3,074 | (1,357) | (381) | (3,218) | (787) | (831) | 111,661 |
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