Year	Percent
1992-01-01	7.097389999999999
1993-01-01	15.160200000000000
1994-01-01	23.935800000000000
1995-01-01	18.818300000000000
1996-01-01	45.472300000000000
1997-01-01	78.844200000000000
1998-01-01	115.512000000000000
1999-01-01	97.856700000000000
2000-01-01	92.925900000000000
2001-01-01	42.488500000000000
2002-01-01	51.687400000000000
2003-01-01	55.749900000000000
2004-01-01	59.880900000000000
2005-01-01	71.252300000000000
2006-01-01	85.400400000000000
2007-01-01	99.219900000000000
2008-01-01	79.450000000000000
2009-01-01	118.353000000000000
2010-01-01	91.913300000000000
2011-01-01	65.304200000000000
2012-01-01	57.585900000000000
2013-01-01	52.786000000000000
2014-01-01	42.088100000000000
2015-01-01	49.653900000000000
2016-01-01	39.062800000000000
2017-01-01	37.941200000000000