Year	Number
2004-01-01	198229
2005-01-01	235750
2006-01-01	242232
2007-01-01	285456
2008-01-01	433731
2009-01-01	462434
2010-01-01	1270129
2011-01-01	668352
2012-01-01	765697
2013-01-01	912821
2014-01-01	1066994
2015-01-01	1332987
2016-01-01	1422116
2017-01-01	1634918