Year	Percent
1960-01-01	31.700700000000000
1961-01-01	32.046800000000000
1962-01-01	32.800700000000000
1963-01-01	32.451700000000000
1964-01-01	32.205600000000000
1965-01-01	31.163700000000000
1966-01-01	34.733200000000000
1967-01-01	34.914000000000000
1968-01-01	35.396900000000000
1969-01-01	36.142400000000000
1970-01-01	31.536800000000000
1971-01-01	30.786300000000000
1972-01-01	31.712600000000000
1973-01-01	31.455800000000000
1974-01-01	30.901400000000000
1975-01-01	31.355100000000000
1976-01-01	30.274500000000000
1977-01-01	29.916999999999998
1978-01-01	30.345500000000000
1979-01-01	29.774600000000000
1980-01-01	28.901700000000000
1981-01-01	29.239400000000000
1982-01-01	30.108600000000000
1983-01-01	30.580400000000000
1984-01-01	32.688500000000000
1985-01-01	37.944600000000000
1986-01-01	47.346100000000000
1987-01-01	54.602200000000000
1988-01-01	59.810300000000000
1989-01-01	60.270800000000000
1990-01-01	60.620700000000000
1991-01-01	57.526700000000000
1992-01-01	54.885400000000000
1993-01-01	53.211100000000000
1994-01-01	52.284700000000000
1995-01-01	52.597100000000000
1996-01-01	53.397300000000000
1997-01-01	57.514900000000000
1998-01-01	65.078600000000000
1999-01-01	65.299500000000000
2000-01-01	60.482200000000000
2001-01-01	65.849800000000000
2002-01-01	70.920400000000000
2003-01-01	73.767000000000000
2004-01-01	72.642900000000000
2005-01-01	73.920900000000000
2006-01-01	78.463500000000000
2007-01-01	88.386700000000000
2008-01-01	95.799300000000000
2009-01-01	109.448000000000000
2010-01-01	106.128999999999990
2011-01-01	104.833000000000000
2012-01-01	103.417999999999990
2013-01-01	104.698000000000000
2014-01-01	107.540000000000000
2015-01-01	114.714000000000000
2016-01-01	121.432000000000000