2015 470 vehicles 2014 741 vehicles 2013 1,370 vehicles 2012 1,786 vehicles 2011 1,554 vehicles 2010 1,789 vehicles 2009 2,385 vehicles 2008 3,373 vehicles 2007 5,067 vehicles 2006 4,642 vehicles 2005 3,546 vehicles 2004 2,108 vehicles