Year	Number
2008-01-01	2.0894
2009-01-01	2.0424
2010-01-01	2.4851
2011-01-01	2.9225
2012-01-01	3.6298
2013-01-01	3.2077
2014-01-01	5.4757
2015-01-01	6.9065
2016-01-01	6.4456
2017-01-01	12.8912