2017 171 vehicles 2016 200 vehicles 2015 362 vehicles 2014 245 vehicles 2013 322 vehicles 2012 234 vehicles 2011 293 vehicles 2010 230 vehicles 1993 428 vehicles 1992 2,295 vehicles 1991 454 vehicles 1990 3,124 vehicles 1989 4,209 vehicles 1988 3,984 vehicles 1987 4,085 vehicles 1986 474 vehicles