Year	Number
2004-01-01	0.4069
2005-01-01	1.1012
2006-01-01	1.5237
2007-01-01	4.5672
2008-01-01	7.7865
2009-01-01	7.1399
2010-01-01	10.8727
2011-01-01	12.8489
2012-01-01	14.4161