Year	Percent
1980-01-01	0.0388580000000000
1981-01-01	0.0390300000000000
1982-01-01	0.3758370000000000
1983-01-01	0.0000900000000000
1984-01-01	0.0000470000000000
1985-01-01	0.0001330000000000
1986-01-01	0.0246260000000000
1987-01-01	0.0359890000000000
1988-01-01	2.3488800000000000
1989-01-01	2.8806599999999998
1990-01-01	3.0256400000000000
1991-01-01	6.4029500000000000
1992-01-01	12.1915000000000000
1993-01-01	13.2666000000000000
1994-01-01	15.2025000000000000
1995-01-01	14.2943000000000000
1996-01-01	13.7951000000000000
1997-01-01	16.7440000000000000
1998-01-01	20.5239000000000000
1999-01-01	19.2292000000000000
2000-01-01	17.5482000000000000
2001-01-01	19.4999000000000000
2002-01-01	19.0416000000000000
2003-01-01	21.8178000000000000
2004-01-01	18.1178000000000000
2005-01-01	12.9576000000000000
2006-01-01	11.2093000000000000
2007-01-01	11.6506000000000000
2008-01-01	12.4144000000000000
2009-01-01	11.3307000000000000
2010-01-01	10.8493000000000000
2011-01-01	8.3282500000000000
2012-01-01	7.8611600000000010
2013-01-01	9.6580900000000000
2014-01-01	11.4179000000000000
2015-01-01	10.6374000000000000
2016-01-01	10.8199000000000000