2007 118 vehicles 2006 380 vehicles 2005 642 vehicles 2004 1,367 vehicles 2003 1,273 vehicles 2002 1,389 vehicles 2001 2,908 vehicles 2000 2,521 vehicles 1999 2,473 vehicles 1998 2,448 vehicles 1997 2,263 vehicles 1996 2,199 vehicles 1995 2,962 vehicles 1994 2,406 vehicles 1993 1,911 vehicles 1992 1,596 vehicles 1991 1,573 vehicles 1990 2,342 vehicles 1989 4,261 vehicles 1988 3,656 vehicles 1987 2,435 vehicles 1986 1,582 vehicles 1985 1,654 vehicles 1984 1,510 vehicles 1983 1,238 vehicles 1982 1,354 vehicles 1981 1,183 vehicles 1980 2,310 vehicles