Year	Number
2005-01-01	8229506
2006-01-01	10621173
2007-01-01	11375244
2008-01-01	10047929
2009-01-01	10405029
2010-01-01	10931161
2011-01-01	11223184
2012-01-01	12272836
2013-01-01	12324225
2014-01-01	13173940
2015-01-01	13209178
2016-01-01	12819657
2017-01-01	12171898