Year	Number
2004-01-01	4192415.0
2005-01-01	5737160.0
2006-01-01	7074284.0
2007-01-01	7576198.0
2008-01-01	7842837.0
2009-01-01	8165976.0
2010-01-01	8570901.0
2011-01-01	8639328.0
2012-01-01	8643592.0
2013-01-01	8869172.0
2014-01-01	8980838.0
2015-01-01	9193677.2
2016-01-01	9316444.0