Year	Number
2007-01-01	11.2825
2008-01-01	11.9902
2009-01-01	12.0894
2010-01-01	12.3335
2011-01-01	13.1836
2012-01-01	13.3433
2013-01-01	13.4672
2014-01-01	13.5681
2015-01-01	14.2585
2016-01-01	14.3364
2017-01-01	13.6168