Year	Number
2004-01-01	19.8652
2005-01-01	29.2905
2006-01-01	40.4838
2007-01-01	47.2492
2008-01-01	65.3399
2009-01-01	73.3548
2010-01-01	81.8864
2011-01-01	87.3127
2012-01-01	94.7877
2013-01-01	102.3174
2014-01-01	110.5810
2015-01-01	112.7755
2016-01-01	113.0619