Year	Percent
1983-01-01	10.2602000000000000
1984-01-01	26.5282000000000000
1985-01-01	13.1114000000000000
1986-01-01	16.8007000000000000
1987-01-01	11.8743000000000000
1988-01-01	13.6409999999999980
1989-01-01	7.0334400000000000
1990-01-01	7.3800399999999990
1991-01-01	10.4924000000000000
1992-01-01	10.1334000000000000
1993-01-01	12.1101000000000000
1994-01-01	6.6880399999999990
1995-01-01	4.3876700000000000
1996-01-01	7.1812500000000000
1997-01-01	6.2554300000000005
1998-01-01	6.2560000000000000
1999-01-01	17.9654000000000000
2000-01-01	15.1440000000000000
2001-01-01	18.0706000000000000
2002-01-01	11.2434000000000000
2003-01-01	15.7740000000000010
2004-01-01	11.9215000000000000
2005-01-01	11.2148000000000000
2006-01-01	9.9226300000000000
2007-01-01	9.7637900000000000
2008-01-01	8.9048000000000000
2009-01-01	10.6592000000000000
2010-01-01	10.5063000000000000
2011-01-01	13.0249000000000000
2012-01-01	9.3404000000000000
2013-01-01	6.9482700000000000
2014-01-01	18.3714000000000000
2015-01-01	15.1451000000000000
2016-01-01	14.2618000000000000