2020 138 vehicles 2019 832 vehicles 2018 436 vehicles 2017 469 vehicles 2016 546 vehicles 2015 912 vehicles 2014 1,236 vehicles 2013 1,415 vehicles 2012 1,276 vehicles 2011 1,437 vehicles 2010 1,136 vehicles 2009 569 vehicles 2008 406 vehicles 2000 496 vehicles 1999 668 vehicles 1998 680 vehicles 1997 973 vehicles 1996 569 vehicles 1995 497 vehicles 1994 387 vehicles 1993 244 vehicles 1991 223 vehicles 1990 439 vehicles 1989 928 vehicles 1988 275 vehicles