Year	Number
2009-01-01	34508850
2010-01-01	34099018
2011-01-01	36798889
2012-01-01	39705906
2013-01-01	42109988
2014-01-01	45677855
2015-01-01	49331774
2016-01-01	51248855
2017-01-01	55611178