Year	Number
2004-01-01	7.0830
2005-01-01	7.1623
2006-01-01	7.1283
2007-01-01	7.4796
2008-01-01	7.7403
2009-01-01	7.9410
2010-01-01	8.5492
2011-01-01	8.9660
2012-01-01	9.2814
2013-01-01	9.5292
2014-01-01	9.7995
2015-01-01	10.0698
2016-01-01	10.3176