Year	Percent
1973-01-01	42.86540000000000
1974-01-01	45.49010000000000
1975-01-01	59.89270000000000
1976-01-01	59.91810000000000
1977-01-01	52.96970000000000
1978-01-01	57.69160000000000
1979-01-01	76.37250000000000
1980-01-01	81.85350000000000
1981-01-01	88.79510000000000
1982-01-01	89.02480000000000
1983-01-01	85.81160000000000
1984-01-01	80.63070000000000
1985-01-01	79.67510000000000
1986-01-01	78.47530000000000
1987-01-01	84.12850000000000
1988-01-01	84.34010000000000
1989-01-01	85.41840000000000
1990-01-01	92.52850000000000
1991-01-01	94.32560000000000
1992-01-01	102.56700000000001
1993-01-01	102.56700000000001
1994-01-01	80.99030000000000
1995-01-01	85.07410000000000
1996-01-01	85.68010000000000
1997-01-01	85.75980000000000
1998-01-01	85.75980000000000
1999-01-01	85.75980000000000
2000-01-01	100.04000000000000
2001-01-01	82.50900000000000
2002-01-01	75.20670000000000
2003-01-01	71.19650000000000
2004-01-01	70.21680000000000
2005-01-01	71.10360000000000
2006-01-01	74.02050000000000
2007-01-01	81.59640000000000
2008-01-01	102.03700000000000
2009-01-01	115.56100000000000
2010-01-01	102.11500000000000
2011-01-01	93.54310000000000
2012-01-01	94.41970000000000
2013-01-01	95.57030000000000
2014-01-01	95.59420000000000
2015-01-01	99.14420000000000
2016-01-01	105.28500000000000