Year	Percent
1963-01-01	51.99080000000000
1964-01-01	55.47940000000000
1965-01-01	53.39490000000000
1966-01-01	52.88070000000000
1967-01-01	54.33030000000000
1968-01-01	57.01730000000000
1969-01-01	59.85490000000000
1970-01-01	60.87760000000000
1971-01-01	58.40240000000000
1972-01-01	56.20010000000000
1973-01-01	55.56410000000000
1974-01-01	52.45080000000000
1975-01-01	55.05060000000000
1976-01-01	57.61590000000000
1977-01-01	58.18830000000000
1978-01-01	56.48520000000000
1979-01-01	55.66930000000000
1980-01-01	56.39410000000000
1981-01-01	59.27370000000000
1982-01-01	62.22760000000000
1983-01-01	63.22770000000000
1984-01-01	63.68780000000000
1985-01-01	68.07760000000000
1986-01-01	72.02050000000000
1987-01-01	74.71810000000000
1988-01-01	74.16840000000000
1989-01-01	76.33480000000000
1990-01-01	80.23940000000000
1991-01-01	83.57880000000000
1992-01-01	85.40730000000000
1993-01-01	80.54640000000000
1994-01-01	78.38460000000000
1995-01-01	78.84620000000000
1996-01-01	78.83750000000000
1997-01-01	79.27690000000000
1998-01-01	98.87130000000000
1999-01-01	114.72800000000000
2000-01-01	104.61200000000001
2001-01-01	110.31900000000000
2002-01-01	109.73299999999999
2003-01-01	110.91100000000000
2004-01-01	104.69100000000000
2005-01-01	100.37299999999999
2006-01-01	102.32300000000000
2007-01-01	102.60600000000001
2008-01-01	117.54299999999999
2009-01-01	125.51200000000000
2010-01-01	120.60900000000000
2011-01-01	122.79700000000001
2012-01-01	127.48000000000000
2013-01-01	128.03000000000000
2014-01-01	129.27900000000000
2015-01-01	126.46700000000001
2016-01-01	131.45000000000000