Year	Percent
1991-01-01	6.596270000000000
1992-01-01	8.103130000000000
1993-01-01	12.716400000000000
1994-01-01	12.981600000000000
1995-01-01	9.289439999999999
1996-01-01	7.289839999999999
1997-01-01	5.398010000000000
1998-01-01	4.754560000000000
1999-01-01	5.287490000000000
2000-01-01	7.106269999999999
2001-01-01	7.145180000000000
2002-01-01	8.834620000000000
2003-01-01	11.564400000000000
2004-01-01	16.173600000000000
2005-01-01	18.047500000000000
2006-01-01	26.326800000000000
2007-01-01	30.986800000000000
2008-01-01	33.272200000000000
2009-01-01	41.499700000000000
2010-01-01	66.930600000000000
2011-01-01	70.291600000000000
2012-01-01	70.378100000000000
2013-01-01	68.949300000000000
2014-01-01	60.769900000000000
2015-01-01	63.966300000000000
2016-01-01	39.259600000000000