2013 142 vehicles 2012 124 vehicles 2011 160 vehicles 2010 228 vehicles 2009 160 vehicles 2008 345 vehicles 2007 559 vehicles 2006 804 vehicles 2005 1,065 vehicles 2004 1,264 vehicles 2003 999 vehicles 2002 534 vehicles 2001 431 vehicles 2000 600 vehicles 1999 888 vehicles 1998 1,126 vehicles 1997 1,545 vehicles 1996 1,314 vehicles 1995 279 vehicles 1994 414 vehicles 1993 599 vehicles 1992 704 vehicles 1991 488 vehicles 1990 391 vehicles 1989 256 vehicles 1988 145 vehicles