2017 5,198 vehicles 2016 10,918 vehicles 2015 15,332 vehicles 2014 22,696 vehicles 2013 12,532 vehicles 2012 12,636 vehicles 2011 13,246 vehicles 2010 16,160 vehicles 2009 17,785 vehicles 2008 20,126 vehicles 2007 17,868 vehicles 2006 15,074 vehicles