Year	Number
2004-01-01	350735
2005-01-01	499761
2006-01-01	1173909
2007-01-01	1519209
2008-01-01	1729283
2009-01-01	1760106
2010-01-01	1825780
2011-01-01	1531530
2012-01-01	1567240
2013-01-01	1585719
2014-01-01	1707855
2015-01-01	1767264
2016-01-01	2001428
2017-01-01	2156221