Year	Percent
1973-01-01	28.415000000000000
1974-01-01	36.273400000000000
1975-01-01	47.298300000000000
1976-01-01	50.172700000000000
1977-01-01	54.253000000000000
1978-01-01	57.904300000000000
1979-01-01	56.975000000000000
1980-01-01	62.601000000000006
1981-01-01	74.012900000000000
1982-01-01	81.493700000000000
1983-01-01	87.778500000000000
1984-01-01	94.064400000000000
1985-01-01	111.054000000000000
1986-01-01	132.208000000000000
1987-01-01	127.976000000000000
1988-01-01	122.550000000000000
1989-01-01	123.915000000000000
1990-01-01	97.310800000000000
1991-01-01	71.220100000000000
1992-01-01	89.741300000000000
1993-01-01	101.208000000000000
1994-01-01	100.861000000000000
1995-01-01	108.089000000000000
1996-01-01	120.717999999999990
1997-01-01	135.995000000000000
1998-01-01	152.925000000000000
1999-01-01	141.895000000000000
2000-01-01	121.952999999999990
2001-01-01	127.163000000000000
2002-01-01	119.280000000000000
2003-01-01	115.014000000000000
2004-01-01	108.782999999999990
2005-01-01	105.883000000000000
2006-01-01	103.889000000000000
2007-01-01	99.585900000000000
2008-01-01	98.020700000000000
2009-01-01	116.865000000000000
2010-01-01	115.586000000000000
2011-01-01	116.110000000000000
2012-01-01	121.214000000000000
2013-01-01	127.981000000000010
2014-01-01	130.380000000000000
2015-01-01	135.057000000000020
2016-01-01	135.248000000000000