Year	Number
2006-01-01	130852
2007-01-01	428493
2008-01-01	508418
2009-01-01	599963
2010-01-01	642860
2011-01-01	811488
2012-01-01	774591
2013-01-01	756927
2014-01-01	5897090
2015-01-01	788085