Year	Number
2004-01-01	0.009069781
2005-01-01	0.011337226
2006-01-01	0.024941897
2007-01-01	0.032877955
2008-01-01	0.043081458
2009-01-01	0.057819851
2010-01-01	0.038546568
2011-01-01	0.063488464
2012-01-01	0.069157077
2013-01-01	0.104302477
2014-01-01	0.130378096