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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 |
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