Year	Number
2004-01-01	1848
2005-01-01	1857
2006-01-01	1862
2007-01-01	1804
2008-01-01	1786
2009-01-01	1799
2010-01-01	1629
2011-01-01	1617
2012-01-01	1580
2013-01-01	1515
2014-01-01	1451
2015-01-01	1354
2016-01-01	1171