Year	Number
2004-01-01	1.3251
2005-01-01	1.2293
2006-01-01	1.2348
2007-01-01	1.2813
2008-01-01	1.2348
2009-01-01	1.1800
2010-01-01	1.1910
2011-01-01	1.1828
2012-01-01	1.1116
2013-01-01	1.0158
2014-01-01	0.9802
2015-01-01	0.9008
2016-01-01	0.7255