Year	Number
2005-01-01	0.6797
2006-01-01	1.7790
2007-01-01	4.4741
2008-01-01	8.6365
2009-01-01	11.4571
2010-01-01	11.2196
2011-01-01	11.9370
2012-01-01	11.4866
2013-01-01	13.3045
2014-01-01	16.1794
2015-01-01	16.2029
2016-01-01	16.7302