Year Month Miles 2009 1 39468411 2009 2 37753849 2009 3 46637575 2009 4 45536212 2009 5 46124290 2009 6 49457299 2009 7 52824154 2009 8 50545162 2009 9 41740289 2009 10 44956606 2009 11 41711288 2009 12 43859876 2010 1 40482623 2010 2 37130277 2010 3 47794152 2010 4 45813191 2010 5 47140355 2010 6 50585549 2010 7 53220274 2010 8 51514627 2010 9 43763674 2010 10 47415478 2010 11 44493823 2010 12 45263819 2011 1 41310633 2011 2 38361355 2011 3 49086084 2011 4 46672936 2011 5 49113879 2011 6 51629464 2011 7 54510543 2011 8 51626688 2011 9 44627162 2011 10 47033130 2011 11 44867338 2011 12 45846263 2012 1 41835534 2012 2 40535739 2012 3 49825523 2012 4 47379882 2012 5 49222436 2012 6 52109328 2012 7 54301048 2012 8 52906366 2012 9 43898585 2012 10 46728054 2012 11 45226179 2012 12 45962175 2013 1 42822906 2013 2 40456822 2013 3 50712955 2013 4 47391944 2013 5 50186216 2013 6 52880046 2013 7 54797606 2013 8 53162634 2013 9 44694652 2013 10 47896736 2013 11 44457429 2013 12 49255429 2014 1 43683254 2014 2 40603129 2014 3 51916713 2014 4 49110432 2014 5 51216600