Year	Percent
1998-01-01	99.12370000000000
1999-01-01	96.60799999999999
2000-01-01	94.05020000000000
2001-01-01	93.95380000000000
2002-01-01	100.00000000000000
2003-01-01	100.00000000000000
2004-01-01	92.46610000000000
2005-01-01	95.95860000000000
2006-01-01	97.33530000000000
2007-01-01	88.86530000000000
2008-01-01	89.53850000000000
2009-01-01	61.74590000000000
2010-01-01	41.84780000000000
2011-01-01	47.60980000000000
2012-01-01	37.68580000000000
2013-01-01	36.89140000000000
2014-01-01	35.94880000000000
2015-01-01	36.66830000000000
2016-01-01	35.85630000000000