Year	Number
2008-01-01	4.4309
2009-01-01	4.2955
2010-01-01	4.3357
2011-01-01	4.5000
2012-01-01	4.2878
2013-01-01	4.3644
2014-01-01	3.5362
2015-01-01	5.0944
2016-01-01	5.0956