Year	Number
2004-01-01	887
2005-01-01	1155
2006-01-01	1233
2007-01-01	1323
2008-01-01	1409
2009-01-01	1417
2010-01-01	1381
2011-01-01	1409
2012-01-01	1516
2013-01-01	1633
2014-01-01	1616
2015-01-01	1814
2016-01-01	1682
2017-01-01	1256