Year	Number
2008-01-01	32350668
2009-01-01	32914884
2010-01-01	33272733
2011-01-01	33752753
2012-01-01	34695693
2013-01-01	35362165
2014-01-01	36129346
2015-01-01	37154465
2016-01-01	37910292