2012 182 vehicles 2011 2,923 vehicles 2010 4,391 vehicles 2009 5,924 vehicles 2008 12,764 vehicles 2007 18,848 vehicles 2006 21,049 vehicles 2005 20,315 vehicles 2004 14,058 vehicles 2003 9,254 vehicles 2002 8,113 vehicles 2001 10,021 vehicles 2000 9,903 vehicles 1999 9,032 vehicles 1998 7,572 vehicles