2018 1,379 vehicles 2017 2,800 vehicles 2016 4,313 vehicles 2015 3,932 vehicles 2014 3,901 vehicles 2013 4,390 vehicles 2012 6,879 vehicles 2011 6,779 vehicles 2010 9,528 vehicles 2009 10,066 vehicles 2008 12,692 vehicles 2007 16,321 vehicles 2006 18,106 vehicles 2005 20,315 vehicles 2004 24,182 vehicles 2003 22,623 vehicles 2002 18,251 vehicles 2001 21,957 vehicles 2000 19,762 vehicles 1999 20,026 vehicles 1998 22,089 vehicles 1997 432 vehicles