|
Number of |
| Year |
Trips |
| 1987 |
7,356 |
| 1988 |
6,280 |
| 1989 |
6,511 |
| 1990 |
4,791 |
| 1991 |
5,072 |
| 1992 |
4,462 |
| 1993 |
4,537 |
| 1994 |
4,548 |
| 1995 |
6,022 |
| 1996 |
7,655 |
| 1997 |
6,911 |
| 1998 |
6,259 |
| 1999 |
7,625 |
| 2000 |
5,862 |
| 2001 |
4,912 |
| 2002 |
4,770 |
| 2003 |
4,315 |
| 2004 |
4,658 |
| 2005 |
4,600 |
| 2006 |
3,565 |
| 2007 |
3,454 |
| AVERAGE |
5,436 |
| STD. DEV. |
1,243 |
|
