The VAERS database has 291,651 events:

Year   Number of entries 1990 2107 1991 9941 1992 10695 1993 10154 1994 10189 1995 10012 1996 10806 1997 11065 1998 10034 1999 12311 2000 14176 2001 13580 2002 14202 2003 16849 2004 15463 2005 15770 2006 17432 2007 28516 2008 30009 2009 7008 (to Apr-30) Foreign 21322