Year	Percent
1960-01-01	10.324800000000000
1961-01-01	9.962819999999999
1962-01-01	11.174200000000000
1963-01-01	13.030800000000000
1964-01-01	13.532600000000000
1965-01-01	12.469800000000000
1966-01-01	12.035000000000000
1967-01-01	13.112300000000000
1968-01-01	13.971100000000000
1969-01-01	14.321700000000000
1970-01-01	14.523700000000000
1971-01-01	15.750500000000000
1972-01-01	16.897800000000000
1973-01-01	15.054600000000000
1974-01-01	15.880600000000000
1975-01-01	16.579800000000000
1976-01-01	17.419100000000000
1977-01-01	19.082300000000000
1978-01-01	27.524700000000000
1979-01-01	34.120400000000000
1980-01-01	33.647100000000000
1981-01-01	34.571100000000000
1982-01-01	34.477900000000000
1983-01-01	34.999500000000000
1984-01-01	33.298900000000000
1985-01-01	32.524200000000000
1986-01-01	33.502400000000000
1987-01-01	33.427300000000000
1988-01-01	29.754900000000000
1989-01-01	29.528400000000000
1990-01-01	29.259800000000000
1991-01-01	27.052000000000000
1992-01-01	26.789100000000000
1993-01-01	26.164900000000000
1994-01-01	24.997200000000000
1995-01-01	26.116800000000000
1996-01-01	27.794800000000000
1997-01-01	28.380400000000000
1998-01-01	30.040100000000000
1999-01-01	34.287800000000000
2000-01-01	40.722000000000000
2001-01-01	48.880600000000000
2002-01-01	49.672100000000000
2003-01-01	52.760300000000000
2004-01-01	57.236400000000000
2005-01-01	66.051000000000000
2006-01-01	70.804600000000000
2007-01-01	77.289800000000000
2008-01-01	85.647000000000000
2009-01-01	88.963200000000000
2010-01-01	102.003999999999990
2011-01-01	119.208000000000000
2012-01-01	121.380000000000000
2013-01-01	119.807000000000000
2014-01-01	117.780000000000000
2015-01-01	114.848999999999990
2016-01-01	110.223999999999990