Year	Number
2004-01-01	40994
2005-01-01	42899
2006-01-01	43795
2007-01-01	43801
2008-01-01	46206
2009-01-01	34241
2010-01-01	28806
2011-01-01	31224
2012-01-01	38389
2013-01-01	38303
2014-01-01	23503
2015-01-01	24611
2016-01-01	9498