Year	Number
2004-01-01	1477
2005-01-01	1462
2006-01-01	1493
2007-01-01	1594
2008-01-01	1722
2009-01-01	1779
2010-01-01	1899
2011-01-01	1967
2012-01-01	2052
2013-01-01	2111
2014-01-01	2192
2015-01-01	2329
2016-01-01	2571