Year	Number
2004-01-01	14059708
2005-01-01	12195473
2006-01-01	12667771
2007-01-01	12724035
2008-01-01	12705710
2009-01-01	12456253
2010-01-01	12216101
2011-01-01	12037725
2012-01-01	11746531
2013-01-01	11758244
2014-01-01	11990245
2015-01-01	12616854
2016-01-01	12938912