Year	Percent
1999-01-01	48.5972
2000-01-01	46.8434
2001-01-01	54.8133
2002-01-01	57.5025
2003-01-01	57.9279
2004-01-01	59.7547
2005-01-01	60.4790
2006-01-01	63.9741
2007-01-01	66.8844
2008-01-01	57.2622
2009-01-01	90.6592
2010-01-01	87.0297
2011-01-01	82.8973
2012-01-01	92.8409
2013-01-01	101.5900
2014-01-01	93.1781
2015-01-01	96.2048
2016-01-01	88.1458