Year	Number
2004-01-01	2065032
2005-01-01	2933346
2006-01-01	3168004
2007-01-01	3549906
2008-01-01	3856922
2009-01-01	3906197
2010-01-01	4405779
2011-01-01	4372499
2012-01-01	4507575
2013-01-01	4952412
2014-01-01	5200366
2015-01-01	5734948
2016-01-01	5909031
2017-01-01	6091860