Year	Number
2004-01-01	1.0747
2005-01-01	1.0747
2006-01-01	1.0747
2007-01-01	2.1494
2008-01-01	2.1494
2009-01-01	3.2241
2010-01-01	4.2988
2011-01-01	15.5830
2012-01-01	12.8963
2013-01-01	13.9710
2014-01-01	12.3589
2015-01-01	12.3589
2016-01-01	12.8963