| 1975 | 1976 | 1977 | 1978 | 1979 | 1980 | 1981 | 1982 | 1983 | 1984 | 1985 | 1986 | 1987 | 1988 | 1989 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | | Political Action Committees--Number, by Committee Type | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Cooperative | (NA) | (NA) | 8 | 12 | 17 | 42 | 41 | 47 | 51 | 52 | 54 | 56 | 59 | 59 | 59 | 59 | 57 | 56 | 56 | 53 | 44 | 41 | 42 | 39 | 38 | 39 | 41 | 39 | | Corporate | 139 | 433 | 550 | 785 | 950 | 1,206 | 1,329 | 1,469 | 1,538 | 1,682 | 1,710 | 1,744 | 1,775 | 1,816 | 1,796 | 1,795 | 1,738 | 1,735 | 1,789 | 1,660 | 1,674 | 1,642 | 1,597 | 1,567 | 1,548 | 1,523 | 1,545 | 1,528 | | Corporation Without Stock | (NA) | (NA) | 20 | 24 | 32 | 56 | 68 | 103 | 122 | 130 | 142 | 151 | 145 | 138 | 137 | 136 | 136 | 142 | 146 | 136 | 129 | 123 | 117 | 115 | 115 | 114 | 118 | 110 | | Labor | 226 | 224 | 234 | 217 | 240 | 297 | 318 | 380 | 378 | 394 | 388 | 384 | 364 | 354 | 349 | 346 | 338 | 347 | 337 | 333 | 334 | 332 | 332 | 321 | 318 | 316 | 317 | 320 | | Nonconnected | (NA) | (NA) | 110 | 162 | 247 | 374 | 531 | 723 | 793 | 1,053 | 1,003 | 1,077 | 957 | 1,115 | 1,060 | 1,062 | 1,083 | 1,145 | 1,121 | 980 | 1,020 | 1,103 | 931 | 935 | 972 | 902 | 1,026 | 1,055 | | Trade/membership/health | (NA) | (NA) | 438 | 453 | 514 | 576 | 614 | 649 | 643 | 698 | 695 | 745 | 865 | 786 | 777 | 774 | 742 | 770 | 761 | 792 | 815 | 838 | 825 | 821 | 844 | 812 | 860 | 975 | | Total | 722 | 1,146 | 1,360 | 1,653 | 2,000 | 2,551 | 2,901 | 3,371 | 3,525 | 4,009 | 3,992 | 4,157 | 4,165 | 4,268 | 4,178 | 4,172 | 4,094 | 4,195 | 4,210 | 3,954 | 4,016 | 4,079 | 3,844 | 3,798 | 3,835 | 3,706 | 3,907 | 4,027 |
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