Year	Number
2010-01-01	1.6308
2011-01-01	1.6874
2012-01-01	1.6949
2013-01-01	1.6987
2014-01-01	1.6800
2015-01-01	1.6645
2016-01-01	1.6744
2017-01-01	1.6884