Year	Number
2004-01-01	91.7889
2005-01-01	90.2117
2006-01-01	87.5723
2007-01-01	86.3599
2008-01-01	85.5715
2009-01-01	84.8816
2010-01-01	83.7807
2011-01-01	82.7214
2012-01-01	82.0647
2013-01-01	80.9308
2014-01-01	79.5753
2015-01-01	78.1186
2016-01-01	77.6159