Year	Percent
1975-01-01	2.2447500000000000
1976-01-01	2.0755600000000000
1977-01-01	1.9579300000000000
1978-01-01	2.0692600000000000
1979-01-01	2.7778900000000000
1980-01-01	4.3567800000000005
1981-01-01	4.2315300000000000
1982-01-01	2.8583300000000000
1983-01-01	3.3060500000000000
1984-01-01	2.7470200000000000
1985-01-01	2.6261900000000002
1986-01-01	4.5945700000000000
1987-01-01	7.2735500000000000
1988-01-01	5.8490600000000000
1989-01-01	4.3809800000000000
1990-01-01	6.0292300000000000
1991-01-01	6.4083000000000000
1992-01-01	5.6850500000000000
1993-01-01	5.3543400000000005
1994-01-01	7.3457000000000000
1995-01-01	9.4062900000000000
1996-01-01	13.4431000000000000
1997-01-01	22.0219000000000000
1998-01-01	32.3203000000000000
1999-01-01	44.6025000000000000
2000-01-01	49.7405000000000000
2001-01-01	38.4392000000000000
2002-01-01	33.0736000000000000
2003-01-01	33.3027000000000000
2004-01-01	30.9087000000000000
2005-01-01	38.1468000000000000
2006-01-01	50.9989999999999950
2007-01-01	70.5514000000000000
2008-01-01	75.0817000000000000
2009-01-01	70.7064000000000000
2010-01-01	70.6624000000000000
2011-01-01	61.3299000000000000
2012-01-01	53.9368000000000000
2013-01-01	58.2225000000000000
2014-01-01	65.2739000000000000
2015-01-01	70.1388000000000000
2016-01-01	102.4350000000000000
2017-01-01	123.1510000000000100