Year	Percent
1960-01-01	38.123000000000005
1961-01-01	37.068600000000000
1962-01-01	37.476300000000000
1963-01-01	38.834500000000000
1964-01-01	41.092700000000000
1965-01-01	42.834500000000000
1966-01-01	45.101900000000000
1967-01-01	44.166400000000000
1968-01-01	44.873900000000000
1969-01-01	46.875900000000000
1970-01-01	45.705000000000000
1971-01-01	50.341800000000000
1972-01-01	53.058700000000000
1973-01-01	55.561800000000000
1974-01-01	57.474700000000000
1975-01-01	56.804300000000000
1976-01-01	56.800100000000000
1977-01-01	57.362400000000000
1978-01-01	54.982400000000000
1979-01-01	55.785800000000000
1980-01-01	58.107200000000000
1981-01-01	62.001300000000000
1982-01-01	63.810900000000000
1983-01-01	64.122900000000000
1984-01-01	65.861700000000000
1985-01-01	61.035800000000000
1986-01-01	52.981100000000000
1987-01-01	49.275600000000000
1988-01-01	45.367800000000000
1989-01-01	43.657600000000000
1990-01-01	42.210000000000000
1991-01-01	44.366300000000000
1992-01-01	48.634500000000000
1993-01-01	52.967500000000000
1994-01-01	54.259700000000000
1995-01-01	57.971900000000000
1996-01-01	64.446100000000000
1997-01-01	70.441000000000000
1998-01-01	79.349800000000000
1999-01-01	94.823800000000000
2000-01-01	112.300000000000000
2001-01-01	113.057999999999990
2002-01-01	114.076000000000010
2003-01-01	118.312000000000010
2004-01-01	118.286000000000000
2005-01-01	120.102000000000000
2006-01-01	126.460000000000000
2007-01-01	134.412999999999980
2008-01-01	147.024000000000000
2009-01-01	156.895000000000000
2010-01-01	155.539000000000000
2011-01-01	158.300000000000000
2012-01-01	159.034000000000000
2013-01-01	146.871000000000000
2014-01-01	134.726000000000000
2015-01-01	122.345000000000000
2016-01-01	113.956000000000000