2002 8,164 vehicles 2001 18,009 vehicles 2000 41,317 vehicles 1999 44,984 vehicles 1998 118,795 vehicles 1997 113,071 vehicles 1996 115,206 vehicles 1995 105,843 vehicles 1994 97,282 vehicles 1993 62,726 vehicles 1992 52,933 vehicles 1991 23,447 vehicles 1990 24,349 vehicles 1989 18,626 vehicles 1988 12,178 vehicles 1987 8,165 vehicles 1986 5,536 vehicles 1985 5,092 vehicles 1984 3,712 vehicles 1983 3,818 vehicles 1982 4,107 vehicles 1981 3,296 vehicles 1980 4,111 vehicles