| Year | Distance |
|---|---|
| 1991 | 2,000 |
| 1992 | 7,000 |
| 1993 | 5,800 |
| 1994 | 12,034 |
| 1995 | 12,223 |
| 1996 | 15,151 |
| 1997 | 16,560 |
| 1998 | 18,033 |
| 1999 | 16,547 |
| 2000 | 17,705 |
| 2001 | 15,226 |
| 2002 | 16,111 |
| 2003 | 12,800 |
| 2004 | 15,252 |
| 2005 | 15,952 |
| 2006 | 21,500 |
| 2007 | 17,814 |
| 2008 | 18,550 |
| 2009 | 19,800 |
| 2010 | 17,380 |
| 2011 | 15,770 |
| 2012 | 12,475 |
| 2013 | 10,240 |
| 2014 | 10,562 |
| Total | 342,485 |