Year	Number
2007-01-01	37535000
2008-01-01	39746453
2009-01-01	42054734
2010-01-01	44029816
2011-01-01	47042983
2012-01-01	53021785
2013-01-01	56672783
2014-01-01	58500181
2015-01-01	62735834
2016-01-01	67873612