Year	Number
2004-01-01	10.5954
2005-01-01	10.7229
2006-01-01	10.5467
2007-01-01	10.6522
2008-01-01	10.4744
2009-01-01	10.5711
2010-01-01	11.1974
2011-01-01	11.0223
2012-01-01	10.8538
2013-01-01	12.2199
2014-01-01	12.2948
2015-01-01	10.8866
2016-01-01	11.2377