Year	Percent
1983-01-01	0.9764820000000000
1984-01-01	0.7661960000000000
1985-01-01	0.6830680000000000
1986-01-01	4.2507400000000000
1987-01-01	5.2808000000000000
1988-01-01	4.1900600000000000
1989-01-01	4.2260400000000000
1990-01-01	3.6654100000000000
1991-01-01	3.0751100000000000
1992-01-01	2.4069900000000000
1993-01-01	2.3891200000000000
1994-01-01	1.7633200000000000
1995-01-01	2.4322800000000000
1996-01-01	2.3138200000000000
1997-01-01	7.2911700000000000
1998-01-01	7.1363800000000000
1999-01-01	7.2740800000000005
2000-01-01	7.9973700000000000
2001-01-01	7.8031900000000000
2002-01-01	7.3092300000000000
2003-01-01	8.6361900000000000
2004-01-01	8.7192500000000000
2005-01-01	8.6101000000000000
2006-01-01	8.8861400000000000
2007-01-01	7.8322800000000000
2008-01-01	6.2464400000000000
2009-01-01	6.6698300000000000
2010-01-01	7.7096300000000010
2011-01-01	7.4132100000000000
2012-01-01	6.0783800000000000
2013-01-01	5.7939500000000000
2014-01-01	5.6327500000000000
2015-01-01	5.5056800000000000
2016-01-01	9.2909600000000000