Year	Number
2007-01-01	44491581
2008-01-01	47489882
2009-01-01	51046334
2010-01-01	54967495
2011-01-01	61291778
2012-01-01	68891637
2013-01-01	74466376
2014-01-01	79118679
2015-01-01	79071982
2016-01-01	80365303