This is the amount from each year that I have. It's all base. You can see when I stopped collecting and picked it back up again.
basketball
89-90: 24
90-91: 1458
91-92: 185
92-93: 1074
93-94: 6000 (est)
94-95: 1844
95-96: 541
96-97: 36
98-99: 8
99-00: 3
00-01: 8
01-02: 14
03-04: 489
04-05: 120
05-06: 638

Baseball
2006: 121
1996: 100
1995: 329
1994: 669
1993: 600 (est)
1992: 400 (est)
1991: 2400 (est)
1990: 1400 (est)
1989: 612
1988: 1000 (est)
1987: 417

Hockey (mainly Ultra and UD)
05-06: 324

Football (mainly Topps DPP and Ultra)
2006: 218