Year	Percent
1960-01-01	0.6400000000000000
1961-01-01	0.6884060000000001
1962-01-01	0.6770830000000000
1963-01-01	1.6570400000000000
1964-01-01	1.5635000000000000
1965-01-01	2.1772000000000000
1966-01-01	3.0842900000000000
1967-01-01	3.7881000000000000
1968-01-01	3.6888199999999998
1969-01-01	4.6208100000000000
1970-01-01	2.8458500000000000
1971-01-01	1.1438100000000000
1972-01-01	2.0613400000000000
1973-01-01	8.1160600000000010
1974-01-01	12.1346000000000000
1975-01-01	21.8768000000000000
1976-01-01	20.1274000000000000
1977-01-01	15.9568000000000000
1978-01-01	25.3108000000000000
1979-01-01	26.6510000000000000
1980-01-01	26.6510000000000000
1981-01-01	26.6510000000000000
1982-01-01	26.6510000000000000
1983-01-01	26.6510000000000000
1984-01-01	26.6510000000000000
1985-01-01	26.6510000000000000
1986-01-01	26.6510000000000000
1987-01-01	26.6510000000000000
1988-01-01	26.6510000000000000
1989-01-01	26.6510000000000000
1990-01-01	26.6510000000000000
1991-01-01	26.6510000000000000
1992-01-01	26.6510000000000000
1993-01-01	26.6510000000000000
1994-01-01	26.6510000000000000
1995-01-01	26.6510000000000000
1996-01-01	26.6510000000000000
1997-01-01	26.6510000000000000
1998-01-01	26.6510000000000000
1999-01-01	26.6510000000000000
2000-01-01	53.2505000000000000
2001-01-01	46.0603000000000000
2002-01-01	30.8758000000000000
2003-01-01	24.8358000000000000
2004-01-01	13.0859999999999990
2005-01-01	5.7349500000000000
2006-01-01	5.8164200000000000
2007-01-01	6.9014899999999990
2008-01-01	6.4671699999999990
2009-01-01	8.9495800000000010
2010-01-01	9.6587600000000010
2011-01-01	26.8322000000000000
2012-01-01	9.9549399999999990
2013-01-01	14.3259000000000000
2014-01-01	14.3259000000000000
2015-01-01	14.3259000000000000
2016-01-01	188.5920000000000000