Year	Number
2004-01-01	80.0776
2005-01-01	81.8996
2006-01-01	80.3723
2007-01-01	73.0101
2008-01-01	72.7784
2009-01-01	73.1918
2010-01-01	72.6509
2011-01-01	72.0842
2012-01-01	71.5030
2013-01-01	72.3573
2014-01-01	71.9476
2015-01-01	72.3822
2016-01-01	72.7871