Year	Percent
1960-01-01	16.994700000000000
1961-01-01	17.447100000000000
1962-01-01	18.320200000000000
1963-01-01	18.749100000000000
1964-01-01	18.731200000000000
1965-01-01	19.182700000000000
1966-01-01	20.216700000000000
1967-01-01	21.392100000000000
1968-01-01	22.736200000000000
1969-01-01	26.442400000000000
1970-01-01	29.021300000000000
1971-01-01	29.922200000000000
1972-01-01	31.147700000000000
1973-01-01	32.059600000000000
1974-01-01	31.128600000000000
1975-01-01	31.580900000000000
1976-01-01	32.013100000000000
1977-01-01	32.975500000000000
1978-01-01	32.926000000000000
1979-01-01	33.086999999999996
1980-01-01	32.251300000000000
1981-01-01	32.443500000000000
1982-01-01	32.650999999999996
1983-01-01	33.698800000000000
1984-01-01	33.589600000000000
1985-01-01	33.598300000000000
1986-01-01	34.737100000000000
1987-01-01	37.238300000000000
1988-01-01	37.423600000000000
1989-01-01	37.689100000000000
1990-01-01	38.453300000000000
1991-01-01	38.749400000000000
1992-01-01	52.537100000000000
1993-01-01	68.930500000000000
1994-01-01	69.780100000000000
1995-01-01	69.950500000000000
1996-01-01	73.601600000000000
1997-01-01	76.054300000000000
1998-01-01	76.054300000000000
1999-01-01	76.054300000000000
2000-01-01	82.739600000000000
2001-01-01	80.270000000000000
2002-01-01	80.462300000000000
2003-01-01	83.896200000000000
2004-01-01	86.932700000000000
2005-01-01	90.909800000000000
2006-01-01	92.049800000000000
2007-01-01	90.635100000000000
2008-01-01	92.368600000000000
2009-01-01	95.082800000000000
2010-01-01	95.416000000000000
2011-01-01	96.298700000000000
2012-01-01	98.122900000000000
2013-01-01	101.216000000000010
2014-01-01	104.546000000000000
2015-01-01	108.402999999999990
2016-01-01	110.648000000000000