Year	Percent
1960-01-01	29.109900000000000
1961-01-01	23.980000000000000
1962-01-01	26.506000000000000
1963-01-01	33.640400000000000
1964-01-01	36.411500000000000
1965-01-01	37.559200000000000
1966-01-01	36.083600000000000
1967-01-01	34.502900000000000
1968-01-01	37.962200000000000
1969-01-01	39.943600000000000
1970-01-01	41.485000000000000
1971-01-01	41.189300000000000
1972-01-01	40.251999999999995
1973-01-01	46.638400000000000
1974-01-01	55.973800000000000
1975-01-01	61.136200000000000
1976-01-01	75.361900000000000
1977-01-01	85.395800000000000
1978-01-01	86.627400000000000
1979-01-01	94.849200000000000
1980-01-01	101.406000000000000
1981-01-01	98.939900000000000
1982-01-01	102.111000000000000
1983-01-01	101.029000000000000
1984-01-01	95.932200000000000
1985-01-01	97.726200000000000
1986-01-01	100.697000000000000
1987-01-01	103.772000000000000
1988-01-01	102.588000000000000
1989-01-01	97.427900000000000
1990-01-01	97.427900000000000
1991-01-01	15.016800000000000
1992-01-01	16.622300000000000
1993-01-01	19.382400000000000
1994-01-01	23.635200000000000
1995-01-01	30.725100000000000
1996-01-01	39.875900000000000
1997-01-01	52.584300000000000
1998-01-01	63.008800000000000
1999-01-01	67.944200000000000
2000-01-01	68.530600000000000
2001-01-01	68.322100000000000
2002-01-01	71.191900000000000
2003-01-01	79.744400000000000
2004-01-01	87.142000000000010
2005-01-01	92.429200000000000
2006-01-01	97.591200000000000
2007-01-01	104.392999999999990
2008-01-01	111.016000000000000
2009-01-01	105.954000000000000
2010-01-01	99.785200000000000
2011-01-01	98.132200000000000
2012-01-01	96.130600000000000
2013-01-01	94.981700000000000
2014-01-01	95.417999999999990
2015-01-01	99.560600000000000
2016-01-01	102.320000000000000