2014 115 vehicles 2008 109 vehicles 2007 157 vehicles 2006 229 vehicles 2005 222 vehicles 1999 291 vehicles 1998 260 vehicles 1997 636 vehicles 1996 690 vehicles 1995 680 vehicles 1994 435 vehicles 1993 868 vehicles 1992 1,760 vehicles 1991 2,546 vehicles 1990 4,794 vehicles 1989 8,158 vehicles 1988 7,767 vehicles 1987 7,259 vehicles 1986 7,765 vehicles 1985 5,880 vehicles 1984 3,794 vehicles 1983 4,724 vehicles 1982 4,196 vehicles 1981 4,397 vehicles 1980 1,653 vehicles