2000 379 vehicles 1999 374 vehicles 1998 562 vehicles 1997 944 vehicles 1996 2,199 vehicles 1995 2,626 vehicles 1994 2,294 vehicles 1993 2,000 vehicles 1992 1,735 vehicles 1991 1,534 vehicles 1990 1,834 vehicles 1989 2,379 vehicles 1988 2,576 vehicles 1987 1,957 vehicles 1986 1,738 vehicles 1985 430 vehicles