2006 3,844 vehicles 2005 4,867 vehicles 2004 4,786 vehicles 2003 4,138 vehicles 2002 4,080 vehicles 2001 3,584 vehicles 2000 3,256 vehicles 1999 3,185 vehicles 1998 3,148 vehicles 1997 2,196 vehicles 1996 927 vehicles 1995 941 vehicles 1994 914 vehicles 1993 565 vehicles 1992 413 vehicles 1991 578 vehicles 1990 688 vehicles 1989 659 vehicles 1988 505 vehicles 1987 399 vehicles 1986 335 vehicles 1985 282 vehicles 1984 269 vehicles 1983 163 vehicles