Year	Number
2007-01-01	0.0346700937511882
2008-01-01	0.0299375779221196
2009-01-01	0.0294686355443335
2010-01-01	0.0303637778968728
2011-01-01	0.0298654351099223
2012-01-01	0.0294103568532445
2013-01-01	0.0431481839821306
2014-01-01	0.0431488930094390