2005 318 vehicles 2004 713 vehicles 2003 1,156 vehicles 2002 1,966 vehicles 2001 1,568 vehicles 2000 2,082 vehicles 1999 2,917 vehicles 1998 2,490 vehicles 1997 2,458 vehicles 1996 2,388 vehicles 1995 2,404 vehicles 1994 2,717 vehicles 1993 3,766 vehicles 1992 3,057 vehicles 1991 1,193 vehicles 1990 1,070 vehicles 1989 765 vehicles 1988 632 vehicles 1987 119 vehicles