Year	Number
2004-01-01	924
2005-01-01	919
2006-01-01	923
2007-01-01	930
2008-01-01	930
2009-01-01	931
2010-01-01	948
2011-01-01	962
2012-01-01	978
2013-01-01	988
2014-01-01	994
2015-01-01	997