Year	Number
2004-01-01	59.0375
2005-01-01	62.2522
2006-01-01	69.4566
2007-01-01	69.6451
2008-01-01	71.7892
2009-01-01	72.5681
2010-01-01	72.2192
2011-01-01	76.3740
2012-01-01	74.8065
2013-01-01	72.3676
2014-01-01	70.7037
2015-01-01	69.2787