Year	Number
2004-01-01	75.6892
2005-01-01	79.2922
2006-01-01	79.5631
2007-01-01	75.8511
2008-01-01	75.1744
2009-01-01	75.7363
2010-01-01	76.5060
2011-01-01	68.5759
2012-01-01	69.8992
2013-01-01	64.1551
2014-01-01	62.4112
2015-01-01	59.8256
2016-01-01	61.1734