Year	Number
2007-01-01	252897
2008-01-01	319178
2009-01-01	364854
2010-01-01	408190
2011-01-01	451967
2012-01-01	507668
2013-01-01	519218
2014-01-01	757750
2015-01-01	689448
2016-01-01	743498