Year	Number
2004-01-01	2359
2005-01-01	4468
2006-01-01	6612
2007-01-01	9418
2008-01-01	11172.000
2009-01-01	12163.884
2010-01-01	13204.000
2011-01-01	22952.000
2012-01-01	9243
2013-01-01	9604
2014-01-01	10719.000
2015-01-01	11341.000
2016-01-01	13427.000