Year	Number
2005-01-01	155
2006-01-01	245
2007-01-01	284
2008-01-01	348
2009-01-01	407
2010-01-01	605
2011-01-01	716
2012-01-01	810
2013-01-01	905
2014-01-01	946
2015-01-01	999