Year	Number
2004-01-01	1944
2005-01-01	1853
2006-01-01	1676
2007-01-01	1604
2008-01-01	1547
2009-01-01	1474
2010-01-01	1433
2011-01-01	1418
2012-01-01	1401
2013-01-01	1385
2014-01-01	1363
2015-01-01	1311
2016-01-01	1270
2017-01-01	1255