Year	Number
2004-01-01	40804
2005-01-01	39082
2006-01-01	40760
2007-01-01	42553
2008-01-01	45465
2009-01-01	45286
2010-01-01	47377
2011-01-01	48237
2012-01-01	47761
2013-01-01	46305
2014-01-01	52211
2015-01-01	57144
2016-01-01	59650