Year	Number
2004-01-01	647.8147
2005-01-01	667.7980
2006-01-01	828.2541
2007-01-01	871.6038
2008-01-01	854.5280
2009-01-01	894.5513
2010-01-01	962.7700
2011-01-01	1045.6095
2012-01-01	1077.3510
2013-01-01	1126.8954
2014-01-01	1155.5308
2015-01-01	1151.3107
2016-01-01	1232.9958