Year	Number
2004-01-01	2.7346
2005-01-01	2.7346
2006-01-01	2.8462
2007-01-01	3.9902
2008-01-01	4.0460
2009-01-01	5.4273
2010-01-01	6.1179
2011-01-01	8.9013
2012-01-01	10.4081
2013-01-01	10.5825
2014-01-01	11.0010
2015-01-01	11.8730
2016-01-01	13.2333