2012 460 vehicles 2011 1,193 vehicles 2010 1,256 vehicles 2009 965 vehicles 2008 2,450 vehicles 2007 3,109 vehicles 2006 6,592 vehicles 2005 8,679 vehicles 2004 8,931 vehicles 2003 2,323 vehicles 2002 566 vehicles 2001 362 vehicles 2000 483 vehicles 1999 512 vehicles 1998 682 vehicles 1997 3,498 vehicles 1996 4,379 vehicles 1995 4,270 vehicles 1994 3,483 vehicles 1993 2,229 vehicles 1992 1,172 vehicles 1990 156 vehicles 1989 128 vehicles