Year	Percent
1960-01-01	206.34599999999998
1961-01-01	199.46700000000000
1962-01-01	195.56099999999998
1963-01-01	161.61500000000000
1964-01-01	157.77900000000000
1965-01-01	145.80100000000002
1966-01-01	117.08700000000000
1967-01-01	121.31600000000000
1968-01-01	134.08900000000000
1969-01-01	131.24000000000000
1970-01-01	115.51500000000000
1971-01-01	107.11100000000000
1972-01-01	97.91210000000000
1973-01-01	90.80840000000000
1974-01-01	84.74860000000000
1975-01-01	92.31580000000000
1976-01-01	103.38900000000000
1977-01-01	89.67780000000000
1978-01-01	80.76050000000000
1979-01-01	82.86290000000000
1980-01-01	82.80280000000000
1981-01-01	82.35080000000000
1982-01-01	83.63460000000000
1983-01-01	77.80430000000000
1984-01-01	72.53399999999999
1985-01-01	60.02650000000000
1986-01-01	54.13960000000000
1987-01-01	59.11790000000000
1988-01-01	59.88040000000000
1989-01-01	53.07680000000000
1990-01-01	46.33610000000000
1991-01-01	49.15660000000000
1992-01-01	41.11160000000000
1993-01-01	30.53290000000000
1994-01-01	31.83880000000000
1995-01-01	34.94330000000000
1996-01-01	38.74430000000000
1997-01-01	44.16880000000000
1998-01-01	38.81100000000000
1999-01-01	33.84810000000000
2000-01-01	34.51470000000000
2001-01-01	37.68380000000000
2002-01-01	44.48880000000000
2003-01-01	55.35820000000000
2004-01-01	63.49110000000000
2005-01-01	68.61330000000000
2006-01-01	78.07860000000000
2007-01-01	85.41420000000000
2008-01-01	83.39350000000000
2009-01-01	79.50790000000000
2010-01-01	75.19660000000000
2011-01-01	71.61480000000000
2012-01-01	69.72360000000000
2013-01-01	71.72130000000000
2014-01-01	71.52580000000000
2015-01-01	66.73850000000000