Year	Percent
1960-01-01	55.358500000000000
1961-01-01	54.643800000000000
1962-01-01	55.633900000000000
1963-01-01	56.861700000000000
1964-01-01	54.247600000000000
1965-01-01	52.699800000000000
1966-01-01	53.490600000000000
1967-01-01	53.350100000000000
1968-01-01	54.027000000000000
1969-01-01	54.623900000000000
1970-01-01	49.953700000000000
1971-01-01	49.945500000000000
1972-01-01	50.608800000000000
1973-01-01	50.603800000000000
1974-01-01	49.697300000000000
1975-01-01	52.407000000000000
1976-01-01	52.814400000000000
1977-01-01	55.850100000000000
1978-01-01	57.757500000000000
1979-01-01	60.050700000000000
1980-01-01	60.812200000000000
1981-01-01	61.291100000000000
1982-01-01	63.344400000000000
1983-01-01	63.876999999999995
1984-01-01	64.318600000000000
1985-01-01	66.376000000000000
1986-01-01	67.963100000000000
1987-01-01	69.598999999999990
1988-01-01	70.078400000000000
1989-01-01	71.905900000000000
1990-01-01	74.087400000000000
1991-01-01	74.191000000000000
1992-01-01	74.724100000000000
1993-01-01	76.578500000000000
1994-01-01	75.144600000000000
1995-01-01	73.433300000000000
1996-01-01	74.170300000000000
1997-01-01	73.417600000000000
1998-01-01	73.417600000000000
1999-01-01	73.417600000000000
2000-01-01	92.148500000000000
2001-01-01	81.534100000000000
2002-01-01	82.336600000000000
2003-01-01	86.698200000000000
2004-01-01	89.988900000000000
2005-01-01	95.010500000000000
2006-01-01	101.030000000000000
2007-01-01	102.173999999999990
2008-01-01	102.752999999999990
2009-01-01	110.467999999999990
2010-01-01	110.722000000000010
2011-01-01	112.988000000000000
2012-01-01	115.812000000000010
2013-01-01	115.479000000000000
2014-01-01	120.421000000000000
2015-01-01	123.083000000000000
2016-01-01	119.940000000000000