Year	Number
2004-01-01	580741
2005-01-01	635821
2006-01-01	770687
2007-01-01	983626
2008-01-01	1207729
2009-01-01	1363431
2010-01-01	1398020
2011-01-01	1675824
2012-01-01	1770986
2013-01-01	1858438
2014-01-01	1838176
2015-01-01	1715142
2016-01-01	1875091