Year	Number
2004-01-01	81.7734
2005-01-01	83.2512
2006-01-01	85.7143
2007-01-01	88.1773
2008-01-01	92.1182
2009-01-01	100.4926
2010-01-01	102.4631
2011-01-01	104.9261
2012-01-01	107.3892
2013-01-01	109.8522
2014-01-01	111.8227
2015-01-01	108.8670
2016-01-01	102.9557