2012 1,575 vehicles 2011 2,032 vehicles 2010 3,228 vehicles 2009 3,988 vehicles 2008 5,997 vehicles 2007 4,358 vehicles 2006 5,205 vehicles 2005 6,753 vehicles 2004 6,586 vehicles 2003 6,098 vehicles 2002 6,722 vehicles 2001 7,824 vehicles 2000 9,229 vehicles 1999 11,413 vehicles 1998 11,170 vehicles 1997 9,138 vehicles 1996 2,716 vehicles