2006 111 vehicles 2005 503 vehicles 2004 828 vehicles 2003 1,344 vehicles 2002 2,150 vehicles 2001 2,165 vehicles 2000 1,844 vehicles 1999 933 vehicles 1998 926 vehicles 1997 1,089 vehicles 1996 1,482 vehicles 1995 1,235 vehicles 1994 699 vehicles 1993 454 vehicles 1992 348 vehicles 1991 221 vehicles 1990 230 vehicles 1989 170 vehicles