Year	Percent
1960-01-01	43.99300000000000
1961-01-01	43.47270000000000
1962-01-01	44.38520000000000
1963-01-01	45.63350000000000
1964-01-01	43.67350000000000
1965-01-01	42.41810000000000
1966-01-01	43.11590000000000
1967-01-01	43.44990000000000
1968-01-01	44.87930000000000
1969-01-01	46.02940000000000
1970-01-01	42.48010000000000
1971-01-01	42.94390000000000
1972-01-01	43.92620000000000
1973-01-01	44.35290000000000
1974-01-01	43.98950000000000
1975-01-01	46.58490000000000
1976-01-01	47.14420000000000
1977-01-01	50.12380000000000
1978-01-01	52.03910000000000
1979-01-01	54.28720000000000
1980-01-01	54.98410000000000
1981-01-01	55.51250000000000
1982-01-01	57.48380000000000
1983-01-01	57.71300000000000
1984-01-01	57.93830000000000
1985-01-01	59.91290000000000
1986-01-01	61.48920000000000
1987-01-01	62.71130000000000
1988-01-01	62.92470000000000
1989-01-01	64.83110000000000
1990-01-01	67.12640000000000
1991-01-01	67.51680000000000
1992-01-01	68.33270000000000
1993-01-01	70.33630000000000
1994-01-01	69.11570000000000
1995-01-01	67.66370000000000
1996-01-01	68.61290000000000
1997-01-01	68.18460000000000
1998-01-01	68.18460000000000
1999-01-01	68.18460000000000
2000-01-01	87.61930000000000
2001-01-01	76.21340000000000
2002-01-01	76.39110000000000
2003-01-01	79.73530000000000
2004-01-01	82.18750000000000
2005-01-01	86.79520000000000
2006-01-01	91.66610000000000
2007-01-01	91.24990000000000
2008-01-01	91.64390000000000
2009-01-01	98.06400000000000
2010-01-01	97.01520000000000
2011-01-01	97.86790000000000
2012-01-01	98.69950000000000
2013-01-01	96.89720000000000
2014-01-01	99.41860000000000
2015-01-01	101.37100000000001
2016-01-01	99.00420000000000