Year	Number
2010-01-01	3.7085
2011-01-01	3.6016
2012-01-01	4.1039
2013-01-01	3.7382
2014-01-01	3.0065
2015-01-01	2.9446
2016-01-01	3.0570
2017-01-01	3.2953