Year	Percent
1960-01-01	40.26780000000000
1961-01-01	38.53580000000000
1962-01-01	38.73830000000000
1963-01-01	40.22700000000000
1964-01-01	40.34440000000000
1965-01-01	40.57360000000000
1966-01-01	41.47080000000000
1967-01-01	42.15410000000000
1968-01-01	44.50700000000000
1969-01-01	44.63320000000000
1970-01-01	41.62080000000000
1971-01-01	40.80110000000000
1972-01-01	40.72920000000000
1973-01-01	40.79360000000000
1974-01-01	40.28390000000000
1975-01-01	37.97730000000000
1976-01-01	38.10230000000000
1977-01-01	39.78120000000000
1978-01-01	40.01380000000000
1979-01-01	39.85240000000000
1980-01-01	38.53100000000000
1981-01-01	39.09760000000000
1982-01-01	39.60920000000000
1983-01-01	38.45290000000000
1984-01-01	37.06150000000000
1985-01-01	37.10350000000000
1986-01-01	37.60520000000000
1987-01-01	39.98610000000000
1988-01-01	44.54520000000000
1989-01-01	49.98290000000000
1990-01-01	53.71660000000000
1991-01-01	52.64500000000000
1992-01-01	51.24410000000000
1993-01-01	44.09830000000000
1994-01-01	35.62020000000000
1995-01-01	32.10900000000000
1996-01-01	31.63980000000000
1997-01-01	33.07080000000000
1998-01-01	34.84820000000000
1999-01-01	36.22010000000000
2000-01-01	37.89020000000000
2001-01-01	65.63990000000000
2002-01-01	92.01000000000000
2003-01-01	93.08170000000000
2004-01-01	93.39790000000000
2005-01-01	97.65770000000000
2006-01-01	101.77700000000000
2007-01-01	107.54600000000000
2008-01-01	117.51000000000000
2009-01-01	124.79200000000000
2010-01-01	120.28900000000000
2011-01-01	123.12100000000001
2012-01-01	127.58500000000000
2013-01-01	129.39300000000000
2014-01-01	128.48400000000000
2015-01-01	125.40299999999999
2016-01-01	125.42500000000000