OpenOffice Calc won't handle over 64k records so I used MS Access (no limitation).

2000 75145
2001 74617
2002 98414
2003 97043 (wasn't planet X supposed to be here?)
2004 115187
2005 105472 (oops, the number is dropping)
2006 98266 (yep, definitely going down)
2007 80978 (to 12/29/2007)

Numbers derived from ANSS datasets.