Year	Percent
1960-01-01	12.8240000000000020
1961-01-01	12.7790000000000020
1962-01-01	10.4922000000000000
1963-01-01	8.5884500000000000
1964-01-01	5.8293099999999995
1965-01-01	5.3960900000000000
1966-01-01	5.7223900000000000
1967-01-01	5.8457099999999995
1968-01-01	4.9547700000000000
1969-01-01	5.1743500000000000
1970-01-01	6.0901900000000000
1971-01-01	8.7362200000000000
1972-01-01	11.0441000000000000
1973-01-01	11.0321000000000000
1974-01-01	9.4360300000000000
1975-01-01	12.6391000000000000
1976-01-01	11.4470000000000010
1977-01-01	12.7697000000000000
1978-01-01	15.4112000000000000
1979-01-01	11.8609000000000000
1980-01-01	11.8609000000000000
1981-01-01	11.8609000000000000
1982-01-01	11.8609000000000000
1983-01-01	11.8609000000000000
1984-01-01	11.8609000000000000
1985-01-01	11.8609000000000000
1986-01-01	11.8609000000000000
1987-01-01	11.8609000000000000
1988-01-01	11.8609000000000000
1989-01-01	11.8609000000000000
1990-01-01	11.8609000000000000
1991-01-01	11.8609000000000000
1992-01-01	11.8609000000000000
1993-01-01	11.8609000000000000
1994-01-01	11.8609000000000000
1995-01-01	11.8609000000000000
1996-01-01	11.8609000000000000
1997-01-01	11.8609000000000000
1998-01-01	11.8609000000000000
1999-01-01	11.8609000000000000
2000-01-01	36.9009000000000000
2001-01-01	32.0781000000000000
2002-01-01	24.3896000000000000
2003-01-01	22.4547000000000000
2004-01-01	20.4799000000000000
2005-01-01	18.3482000000000000
2006-01-01	17.4346000000000000
2007-01-01	19.8197000000000000
2008-01-01	29.3453000000000000
2009-01-01	52.9232000000000000
2010-01-01	41.2828000000000000
2011-01-01	98.1249000000000000
2012-01-01	41.7404000000000000
2013-01-01	75.4107000000000000
2014-01-01	75.4107000000000000
2015-01-01	203.8900000000000000
2016-01-01	197.8960000000000000