2011 141 vehicles 2010 143 vehicles 2009 215 vehicles 2008 399 vehicles 2007 576 vehicles 2006 768 vehicles 2005 921 vehicles 2004 1,517 vehicles 2003 1,865 vehicles 2002 1,961 vehicles 2001 1,914 vehicles 2000 1,550 vehicles 1999 1,623 vehicles 1998 1,610 vehicles 1997 1,267 vehicles