Year	Number
2004-01-01	4185475
2005-01-01	5720120
2006-01-01	7055243
2007-01-01	7562887
2008-01-01	7840342
2009-01-01	8168473
2010-01-01	8543065
2011-01-01	9184205
2012-01-01	9023324
2013-01-01	9282250
2014-01-01	9379595
2015-01-01	9603267
2016-01-01	9418669