Year	Number
2004-01-01	3645381.5032
2005-01-01	4251602.9724
2006-01-01	5125670.5136
2007-01-01	6783665.3321
2008-01-01	7959323.7986
2009-01-01	9625200.8858
2010-01-01	11124172.9720
2011-01-01	12381577.5215
2012-01-01	14276231.4081
2013-01-01	17648291.9044
2014-01-01	24718390.2345
2015-01-01	28537279.4872
2016-01-01	30118185.8843