Year	Number
2005-01-01	4.5553
2006-01-01	5.0893
2007-01-01	5.5450
2008-01-01	5.9248
2009-01-01	6.0994
2010-01-01	8.7081
2011-01-01	9.6695
2012-01-01	9.9983
2013-01-01	10.6513
2014-01-01	10.9586
2015-01-01	11.8236