Year	Percent
1960-01-01	11.337800000000000
1961-01-01	14.454700000000000
1962-01-01	17.502400000000000
1963-01-01	15.063200000000000
1964-01-01	12.691500000000000
1965-01-01	13.492400000000000
1966-01-01	13.663800000000000
1967-01-01	16.815300000000000
1968-01-01	23.346700000000000
1969-01-01	30.025500000000000
1970-01-01	34.526100000000000
1971-01-01	37.178400000000000
1972-01-01	38.723600000000000
1973-01-01	36.025999999999996
1974-01-01	36.482800000000000
1975-01-01	36.759000000000000
1976-01-01	33.359500000000000
1977-01-01	32.749400000000000
1978-01-01	33.409900000000000
1979-01-01	36.879400000000000
1980-01-01	42.924000000000000
1981-01-01	45.262200000000000
1982-01-01	48.336900000000000
1983-01-01	49.063900000000000
1984-01-01	49.030700000000000
1985-01-01	50.671700000000000
1986-01-01	50.604500000000000
1987-01-01	48.586000000000006
1988-01-01	46.041200000000000
1989-01-01	47.902400000000000
1990-01-01	50.331600000000000
1991-01-01	51.446800000000000
1992-01-01	52.180200000000000
1993-01-01	51.700200000000000
1994-01-01	51.109800000000000
1995-01-01	50.720800000000000
1996-01-01	53.174200000000000
1997-01-01	57.952900000000000
1998-01-01	69.441800000000000
1999-01-01	70.438400000000000
2000-01-01	75.216200000000000
2001-01-01	80.282300000000000
2002-01-01	82.831400000000000
2003-01-01	87.981100000000000
2004-01-01	86.107999999999990
2005-01-01	85.924700000000000
2006-01-01	86.780500000000000
2007-01-01	87.324400000000000
2008-01-01	94.549900000000000
2009-01-01	97.395800000000000
2010-01-01	91.365500000000000
2011-01-01	91.770800000000000
2012-01-01	90.864100000000000
2013-01-01	111.779000000000000
2014-01-01	134.704000000000000
2015-01-01	136.664000000000000
2016-01-01	138.499000000000000