1996 244 vehicles 1995 770 vehicles 1994 808 vehicles 1993 340 vehicles 1992 201 vehicles 1991 252 vehicles 1990 869 vehicles 1989 925 vehicles 1988 678 vehicles 1987 435 vehicles 1986 286 vehicles 1985 211 vehicles 1984 458 vehicles 1983 1,033 vehicles 1982 1,102 vehicles 1981 1,528 vehicles 1980 1,183 vehicles