Year	Percent
1961-01-01	54.29800000000000
1962-01-01	47.94440000000000
1963-01-01	57.19950000000000
1964-01-01	52.12660000000000
1965-01-01	75.50030000000000
1966-01-01	65.99790000000000
1967-01-01	62.79940000000000
1968-01-01	54.15490000000000
1969-01-01	54.12770000000000
1970-01-01	57.57750000000000
1971-01-01	59.99220000000000
1972-01-01	72.16190000000000
1973-01-01	72.25940000000000
1974-01-01	66.41330000000000
1975-01-01	68.11350000000000
1976-01-01	72.11790000000000
1977-01-01	79.30830000000000
1978-01-01	88.31610000000000
1979-01-01	84.29770000000000
1980-01-01	72.16950000000000
1981-01-01	54.68620000000000
1982-01-01	39.94330000000000
1983-01-01	41.72560000000000
1984-01-01	50.41580000000000
1985-01-01	51.55960000000000
1986-01-01	50.04650000000000
1987-01-01	47.81190000000000
1988-01-01	49.55720000000000
1989-01-01	49.94940000000000
1990-01-01	51.19470000000000
1991-01-01	57.32510000000000
1992-01-01	63.15980000000000
1993-01-01	70.82630000000000
1994-01-01	68.78699999999999
1995-01-01	63.69160000000000
1996-01-01	68.10700000000000
1997-01-01	74.03100000000000
1998-01-01	81.37660000000000
1999-01-01	86.87340000000000
2000-01-01	88.12230000000000
2001-01-01	91.85360000000000
2002-01-01	95.31880000000000
2003-01-01	92.55850000000000
2004-01-01	91.91510000000000
2005-01-01	97.48640000000000
2006-01-01	104.45299999999999
2007-01-01	104.40700000000001
2008-01-01	102.24500000000000
2009-01-01	99.01940000000000
2010-01-01	94.18400000000000
2011-01-01	99.87980000000000
2012-01-01	109.89900000000000
2013-01-01	108.77900000000000
2014-01-01	105.04000000000000
2015-01-01	104.13799999999999
2016-01-01	108.85300000000000