Year	Number
2004-01-01	0.0000
2005-01-01	0.0000
2006-01-01	0.0000
2007-01-01	0.1426
2008-01-01	0.4635
2009-01-01	0.4635
2010-01-01	0.6061
2011-01-01	1.1765
2012-01-01	1.3904
2013-01-01	1.2478
2014-01-01	1.3547
2015-01-01	1.9251
2016-01-01	2.4955