Year	Number
2004-01-01	1297368
2005-01-01	1377011
2006-01-01	1516633
2007-01-01	1621024
2008-01-01	1742325
2009-01-01	1827350
2010-01-01	1816848
2011-01-01	1841507
2012-01-01	1905691
2013-01-01	1976091
2014-01-01	2043146
2015-01-01	2159160
2016-01-01	2222326