Year	Number
2004-01-01	108637
2005-01-01	78456
2006-01-01	96380
2007-01-01	136231
2008-01-01	166402
2009-01-01	187370
2010-01-01	215539
2011-01-01	259192
2012-01-01	309329
2013-01-01	376905
2014-01-01	481715
2015-01-01	497153
2016-01-01	611354