Year	Number
2004-01-01	875938
2005-01-01	1100430
2006-01-01	1292921
2007-01-01	1524374
2008-01-01	1679967
2009-01-01	1660389
2010-01-01	1612353
2011-01-01	1605522
2012-01-01	1633963
2013-01-01	1619656
2014-01-01	1605801
2015-01-01	1597059
2016-01-01	1559342
2017-01-01	1561236