1994 200 vehicles 1993 322 vehicles 1992 333 vehicles 1991 429 vehicles 1990 755 vehicles 1989 1,120 vehicles 1988 1,276 vehicles 1987 1,230 vehicles 1986 1,282 vehicles 1985 1,330 vehicles 1984 1,705 vehicles 1983 1,716 vehicles 1982 584 vehicles