Year	Number
2004-01-01	145.8105
2005-01-01	148.6431
2006-01-01	152.0418
2007-01-01	157.3559
2008-01-01	156.3733
2009-01-01	151.7337
2010-01-01	149.1277
2011-01-01	146.8934
2012-01-01	135.9186
2013-01-01	130.6355
2014-01-01	118.6563
2015-01-01	116.7716
2016-01-01	113.1592
2017-01-01	112.2623