Year	Number
2004-01-01	7809116
2005-01-01	8220939
2006-01-01	8490686
2007-01-01	8275157
2008-01-01	8439919
2009-01-01	8529857
2010-01-01	8798976
2011-01-01	9133269
2012-01-01	9143357
2013-01-01	8651828
2014-01-01	8294349
2015-01-01	8461233
2016-01-01	8460819