2007 107 vehicles 2006 560 vehicles 2005 802 vehicles 2004 1,548 vehicles 2003 1,451 vehicles 2000 424 vehicles 1999 512 vehicles 1998 535 vehicles 1997 927 vehicles 1996 958 vehicles 1995 649 vehicles 1994 925 vehicles 1993 1,035 vehicles 1992 1,006 vehicles 1991 873 vehicles 1990 447 vehicles 1989 343 vehicles 1988 296 vehicles 1987 349 vehicles 1986 235 vehicles 1985 303 vehicles 1984 244 vehicles 1983 218 vehicles 1982 163 vehicles 1981 123 vehicles