| Year | Distance |
|---|---|
| 1990 | 6,016 |
| 1991 | 11,199 |
| 1992 | 8,228 |
| 1993 | 8,621 |
| 1994 | 10,497 |
| 1995 | 6,980 |
| 1996 | 4,313 |
| 1997 | 4,573 |
| 1998 | 2,537 |
| 1999 | 5,707 |
| 2000 | 9,403 |
| 2001 | 2,473 |
| 2002 | 6,533 |
| 2003 | 5,187 |
| 2004 | 4,059 |
| 2005 | 2,921 |
| 2006 | 1,624 |
| 2007 | 2,537 |
| 2008 | 3,311 |
| 2009 | 1,701 |
| 2010 | 1,396 |
| 2011 | 89 |
| 2012 | 0 |
| 2013 | 0 |
| 2014 | 300 |
| Total | 110,205 |