Year	Number
2004-01-01	639
2005-01-01	694
2006-01-01	806
2007-01-01	992
2008-01-01	1089
2009-01-01	1078
2010-01-01	974
2011-01-01	1019
2012-01-01	1154
2013-01-01	1207
2014-01-01	1234
2015-01-01	1151
2016-01-01	1197