2008 154 vehicles 2007 180 vehicles 2006 157 vehicles 2000 181 vehicles 1999 258 vehicles 1998 391 vehicles 1997 344 vehicles 1996 452 vehicles 1995 259 vehicles 1994 312 vehicles 1993 385 vehicles 1992 348 vehicles 1991 364 vehicles 1990 184 vehicles 1989 226 vehicles 1988 185 vehicles 1987 132 vehicles