The latest games were from 2009, as I performed the exercise to compare the historic drop rate to 2010 games. Here's the pre-2004 games:
1980 Miracle Bowl (46-45 win)
1984 Wyoming@BYU (41-38 win)
1984 BYU @Utah (24-14 win)
1993 BYU @SDSU (45-44 win)
1994 Copper Bowl (31-6 win)
1996 BYU @TCU (45-14 win)
2001 Utah@BYU (24-21 win)
2002 SDSU@BYU (34-10 win)
2002 Wyoming@BYU (35-31 win)
2003 Georgia Tech@BYU (24-13 win)
2003 BYU@SDSU (44-36 win [Beck])
2003 BYU @Wyoming (10-13 loss)
2003 BYU@Notre Dame (14-33 loss)
2003 Utah@BYU (0-3 loss)
The remaining 28 games were from 04-09. As you can see, the older games weren't exactly a random sample with five of fourteen being high scoring shootouts and only two games where the winner scored less than 24 points. More recent numbers using all games from all D1A teams would be preferable, but I don't have access to those numbers. But most passes were not, in fact, from Heisman candidates.