Year	Number
2004-01-01	680
2005-01-01	666
2006-01-01	654
2007-01-01	649
2008-01-01	641
2009-01-01	640
2010-01-01	636
2011-01-01	633
2012-01-01	628
2013-01-01	626
2014-01-01	616
2015-01-01	610
2016-01-01	599