2011 518 vehicles 2010 874 vehicles 2009 954 vehicles 2008 1,984 vehicles 2007 2,955 vehicles 2006 4,003 vehicles 2005 5,095 vehicles 2004 5,140 vehicles 2003 4,501 vehicles 2002 6,020 vehicles 2001 5,558 vehicles 2000 5,955 vehicles 1999 6,400 vehicles 1998 5,199 vehicles 1997 565 vehicles