Year	Number
2004-01-01	84.9179
2005-01-01	85.4111
2006-01-01	84.4756
2007-01-01	88.2690
2008-01-01	92.1731
2009-01-01	92.0452
2010-01-01	91.6478
2011-01-01	59.8239
2012-01-01	61.1469
2013-01-01	60.5766
2014-01-01	60.2068
2015-01-01	60.1367
2016-01-01	48.3890
2017-01-01	50.4140