Year	Number
2004-01-01	30767446
2005-01-01	35726357
2006-01-01	40636057
2007-01-01	40793934
2008-01-01	43740910
2009-01-01	44805090
2010-01-01	46753993
2011-01-01	47450038
2012-01-01	46312891
2013-01-01	46265684
2014-01-01	47029621
2015-01-01	49102240
2016-01-01	51992398