Year	Number
2004-01-01	30789109
2005-01-01	33438360
2006-01-01	30050444
2007-01-01	30456888
2008-01-01	32709036
2009-01-01	34500639
2010-01-01	39740077
2011-01-01	43556234
2012-01-01	41761191
2013-01-01	45297967
2014-01-01	47374174
2015-01-01	50928554
2016-01-01	53478627