Year	Number
2004-01-01	0.0779
2005-01-01	0.0779
2006-01-01	0.0779
2007-01-01	0.0779
2008-01-01	0.1168
2009-01-01	0.5062
2010-01-01	0.9735
2011-01-01	1.3629
2012-01-01	1.9470
2013-01-01	3.1542
2014-01-01	3.1542
2015-01-01	3.0763
2016-01-01	3.1542