2011 474 vehicles 2010 838 vehicles 2009 951 vehicles 2008 1,761 vehicles 2007 2,300 vehicles 2006 821 vehicles 2005 675 vehicles 2004 791 vehicles 2003 847 vehicles 2002 987 vehicles 2001 1,624 vehicles 2000 2,021 vehicles 1999 3,416 vehicles 1998 3,935 vehicles 1997 2,973 vehicles 1996 2,152 vehicles 1995 596 vehicles 1994 485 vehicles 1993 575 vehicles 1992 754 vehicles 1991 1,016 vehicles 1990 1,067 vehicles 1989 229 vehicles 1988 210 vehicles 1986 158 vehicles 1985 746 vehicles 1984 806 vehicles 1983 1,157 vehicles 1982 2,709 vehicles 1981 3,806 vehicles 1980 4,188 vehicles