Number of Listed Companies Yearly: NASDAQ-NYSE-AMEX
Month NASDAQ NYSE Amex
1975 2,467 1,557 1,215
1976 2,456 1,576 1,161
1977 2,456 1,575 1,098
1978 2,475 1,581 1,004
1979 2,543 1,565 931
1980 2,894 1,570 892
1981 3,353 1,565 867
1982 3,264 1,562 834
1983 3,901 1,550 822
1984 4,097 1,543 792
1985 4,136 1,540 783
1986 4,417 1,573 796
1987 4,706 1,647 869
1988 4,451 1,681 896
1989 4,293 1,719 859
1990 4,132 1,769 859
1991 4,094 1,885 860
1992 4,113 2,089 814
1993 4,611 2,362 869
1994 4,902 2,570 824
1995 5,122 2,675 791
1996 5,556 2,907 751
1997 5,487 3,047 771
1998 5,068 3,114 770
2000 4,734 2,862 765
2001 4,109 2,798 691
2002 3,765 2,784 678
Source: http://www.marketdata.nasdaq.com/asp/Sec1ComComp.asp