Year	Number
2004-01-01	1389
2005-01-01	1490
2006-01-01	1522
2007-01-01	1643
2008-01-01	1731
2009-01-01	1786
2010-01-01	1814
2011-01-01	1845
2012-01-01	1789
2013-01-01	1775
2014-01-01	1692
2015-01-01	1679
2016-01-01	1676
2017-01-01	1646