Year	Number
2007-01-01	0.0222
2008-01-01	0.0662
2009-01-01	0.0659
2010-01-01	0.0219
2011-01-01	0.0437
2012-01-01	0.0436
2013-01-01	0.0436
2014-01-01	0.0435
2015-01-01	0.0435
2016-01-01	0.0435
2017-01-01	0.0435