Year	Number
2004-01-01	41.0256
2005-01-01	41.0256
2006-01-01	43.5897
2007-01-01	51.2821
2008-01-01	51.2821
2009-01-01	48.7179
2010-01-01	53.8462
2011-01-01	53.8462
2012-01-01	41.0256
2013-01-01	66.6667
2014-01-01	66.6667
2015-01-01	71.7949
2016-01-01	74.3590
2017-01-01	76.9231