| Collision Year | Mean | Median | Deaths |
|---|---|---|---|
| 1991 | 35.82 | 30.00 | 4464 |
| 1992 | 36.91 | 32.00 | 4023 |
| 1993 | 37.42 | 32.00 | 4006 |
| 1994 | 38.65 | 34.00 | 4071 |
| 1995 | 38.25 | 34.00 | 4034 |
| 1996 | 39.97 | 36.00 | 3862 |
| 1997 | 41.11 | 37.00 | 3591 |
| 1998 | 39.96 | 36.00 | 3389 |
| 1999 | 39.47 | 36.00 | 3476 |
| 2000 | 40.51 | 37.00 | 3670 |
| 2001 | 39.71 | 36.00 | 3864 |
| 2002 | 39.54 | 37.00 | 3990 |
| 2003 | 40.06 | 37.00 | 4117 |
| 2004 | 39.67 | 36.00 | 3991 |
| Total | 39.01 | 35.00 | 54548 |