2006 397 vehicles 2005 1,539 vehicles 2004 2,955 vehicles 2003 2,948 vehicles 2002 2,409 vehicles 2001 3,198 vehicles 2000 2,810 vehicles 1999 3,492 vehicles 1998 3,394 vehicles 1997 2,869 vehicles 1996 2,812 vehicles 1995 2,635 vehicles 1994 2,242 vehicles 1993 907 vehicles