2002 884 vehicles 2001 2,022 vehicles 2000 2,671 vehicles 1999 3,455 vehicles 1998 4,771 vehicles 1997 3,848 vehicles 1996 2,843 vehicles 1995 255 vehicles 1994 362 vehicles 1993 1,448 vehicles 1992 1,865 vehicles 1991 376 vehicles