Year	Number
2008-01-01	3.8441
2009-01-01	3.8861
2010-01-01	3.9296
2011-01-01	4.0633
2012-01-01	5.4552
2013-01-01	8.0826
2014-01-01	8.1310
2015-01-01	10.1885
2016-01-01	5.2725