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	2.6867
2010-01-01	2.6867
2011-01-01	4.8361
2012-01-01	5.3735
2013-01-01	5.9108
2014-01-01	6.9855
2015-01-01	6.9855
2016-01-01	8.0602