Year	Number
2004-01-01	97.4916
2005-01-01	99.2442
2006-01-01	101.8004
2007-01-01	104.2080
2008-01-01	103.7535
2009-01-01	99.0597
2010-01-01	95.7290
2011-01-01	88.2174
2012-01-01	83.7482
2013-01-01	73.5617
2014-01-01	69.6794
2015-01-01	67.5120
2016-01-01	61.8764
2017-01-01	58.8117