Year	Number
2004-01-01	790.9642
2005-01-01	1184.3511
2006-01-01	1254.6644
2007-01-01	1330.3249
2008-01-01	1261.2352
2009-01-01	1306.5778
2010-01-01	1244.6560
2011-01-01	1282.9122
2012-01-01	1284.0740
2013-01-01	1314.5165
2014-01-01	1369.9286
2015-01-01	1447.0474
2016-01-01	1576.5835
2017-01-01	1717.7399