Year	Number
2010-01-01	3.4895
2011-01-01	3.6637
2012-01-01	3.7282
2013-01-01	3.7798
2014-01-01	3.7798
2015-01-01	3.7862
2016-01-01	3.8507
2017-01-01	3.8830