2011 144 vehicles 2006 221 vehicles 2005 329 vehicles 2004 262 vehicles 2003 835 vehicles 2002 1,210 vehicles 2001 1,742 vehicles 2000 2,349 vehicles 1999 3,116 vehicles 1998 2,151 vehicles 1997 2,178 vehicles 1996 1,049 vehicles 1995 838 vehicles 1994 769 vehicles 1993 684 vehicles 1992 774 vehicles 1991 967 vehicles 1990 636 vehicles 1989 620 vehicles 1988 442 vehicles 1987 338 vehicles