Year	Number
2004-01-01	343.8429
2005-01-01	359.6251
2006-01-01	370.1905
2007-01-01	367.9575
2008-01-01	428.1992
2009-01-01	458.8582
2010-01-01	449.4906
2011-01-01	452.5320
2012-01-01	486.4204
2013-01-01	425.7283
2014-01-01	457.6786
2015-01-01	477.9847
2016-01-01	452.5393