1996 351 vehicles 1995 673 vehicles 1994 751 vehicles 1993 799 vehicles 1992 703 vehicles 1991 909 vehicles 1990 1,316 vehicles 1989 1,853 vehicles 1988 1,351 vehicles 1987 807 vehicles 1986 681 vehicles 1985 712 vehicles 1984 407 vehicles 1983 267 vehicles 1982 170 vehicles