Year	Number
2004-01-01	0.7000
2005-01-01	0.6894
2006-01-01	0.7000
2007-01-01	1.5062
2008-01-01	1.7395
2009-01-01	1.8774
2010-01-01	2.4395
2011-01-01	0.9334
2012-01-01	2.9593
2013-01-01	3.0441
2014-01-01	3.1290
2015-01-01	3.2881