2004 769 vehicles 2003 2,020 vehicles 2002 1,416 vehicles 2001 1,997 vehicles 2000 4,343 vehicles 1999 5,823 vehicles 1998 6,096 vehicles 1997 6,241 vehicles 1996 6,936 vehicles 1995 7,895 vehicles 1994 9,539 vehicles 1993 7,359 vehicles 1992 4,796 vehicles 1991 486 vehicles