Year	Number
2004-01-01	6.7138
2005-01-01	7.0671
2006-01-01	8.1272
2007-01-01	9.1873
2008-01-01	9.1873
2009-01-01	10.6007
2010-01-01	10.2473
2011-01-01	7.4205
2012-01-01	7.7739
2013-01-01	9.5406
2014-01-01	10.2473
2015-01-01	9.1873
2016-01-01	9.8940