Year	Number
2004-01-01	141.9963
2005-01-01	175.2332
2006-01-01	195.7945
2007-01-01	212.4220
2008-01-01	219.1336
2009-01-01	225.0487
2010-01-01	226.9855
2011-01-01	249.6572
2012-01-01	290.5998
2013-01-01	315.2901
2014-01-01	307.2583
2015-01-01	336.0916
2016-01-01	425.6554