Year	Percent
1975-01-01	1.1461600000000000
1976-01-01	1.1632400000000000
1977-01-01	1.2399900000000000
1978-01-01	1.0092900000000000
1979-01-01	1.0708799999999998
1980-01-01	2.2986800000000000
1981-01-01	3.6735700000000000
1982-01-01	3.2689100000000000
1983-01-01	3.8370699999999998
1984-01-01	4.9569100000000000
1985-01-01	6.6158500000000000
1986-01-01	10.0547000000000000
1987-01-01	20.7387000000000000
1988-01-01	22.5261000000000000
1989-01-01	15.1691000000000000
1990-01-01	13.2261000000000000
1991-01-01	13.3403000000000000
1992-01-01	13.3183000000000000
1993-01-01	16.8704000000000000
1994-01-01	25.5809000000000000
1995-01-01	28.2136000000000000
1996-01-01	30.7302000000000000
1997-01-01	34.3711000000000000
1998-01-01	35.9161000000000000
1999-01-01	44.0981000000000000
2000-01-01	50.1859000000000000
2001-01-01	55.9195000000000000
2002-01-01	66.6148000000000000
2003-01-01	79.7933000000000000
2004-01-01	86.7263000000000000
2005-01-01	86.0619000000000000
2006-01-01	99.3753000000000000
2007-01-01	133.5330000000000000
2008-01-01	115.8340000000000000
2009-01-01	82.7621000000000000
2010-01-01	93.4815000000000000
2011-01-01	86.4228000000000000
2012-01-01	68.0302000000000000
2013-01-01	53.9074000000000000
2014-01-01	48.2221000000000000
2015-01-01	51.6783000000000000
2016-01-01	60.1819000000000000
2017-01-01	189.2240000000000200