Year	Number
2004-01-01	51.2736
2005-01-01	57.0727
2006-01-01	71.5811
2007-01-01	87.3910
2008-01-01	102.6538
2009-01-01	89.7446
2010-01-01	96.5378
2011-01-01	100.8807
2012-01-01	110.4626
2013-01-01	110.3417
2014-01-01	111.4111
2015-01-01	112.2072
2016-01-01	112.0684