Year	Number
2004-01-01	1229302
2005-01-01	1425718
2006-01-01	1386450
2007-01-01	1752376
2008-01-01	1798491
2009-01-01	1742137
2010-01-01	1808879
2011-01-01	2232105
2012-01-01	2470707
2013-01-01	2086801
2014-01-01	2376060
2015-01-01	2478109
2016-01-01	1958494