Year	Percent
1972-01-01	0.2512110000000000
1973-01-01	0.2414430000000000
1974-01-01	0.1690490000000000
1975-01-01	0.1565320000000000
1976-01-01	0.1354080000000000
1977-01-01	2367.2700000000000000
1978-01-01	2156.6100000000000000
1979-01-01	1439.8700000000000000
1980-01-01	1195.9600000000000000
1981-01-01	1063.6900000000000000
1982-01-01	133.9000000000000000
1983-01-01	52.0765000000000000
1984-01-01	5.8956800000000005
1985-01-01	1.8140800000000000
1986-01-01	1.7774000000000000
1987-01-01	2.4082700000000000
1988-01-01	2.5604000000000000
1989-01-01	3.5873800000000005
1990-01-01	38.2751000000000000
1991-01-01	34.7543000000000000
1992-01-01	32.0804000000000000
1993-01-01	34.9803000000000000
1994-01-01	35.6335000000000000
1995-01-01	26.2514000000000000
1996-01-01	28.0002000000000000
1997-01-01	27.4802000000000000
1998-01-01	22.5498000000000000
1999-01-01	21.3458000000000000
2000-01-01	16.3624000000000000
2001-01-01	16.2721000000000000
2002-01-01	20.6365000000000000
2003-01-01	23.7035000000000000
2004-01-01	18.6949000000000000
2005-01-01	17.4565000000000000
2006-01-01	12.1088000000000000
2007-01-01	13.1557000000000000
2008-01-01	10.3667000000000000
2009-01-01	12.8565000000000000
2010-01-01	12.1570000000000000
2011-01-01	17.8781000000000000
2012-01-01	14.8007000000000000
2013-01-01	14.9051000000000000
2014-01-01	10.8336000000000000