Year	Percent
1960-01-01	241.88700000000000
1961-01-01	247.51000000000000
1962-01-01	236.13299999999998
1963-01-01	242.11100000000000
1964-01-01	254.72099999999998
1965-01-01	234.91099999999997
1966-01-01	228.85700000000000
1967-01-01	232.35900000000000
1968-01-01	210.73100000000000
1969-01-01	183.18400000000003
1970-01-01	174.86700000000002
1971-01-01	166.18900000000002
1972-01-01	162.02600000000000
1973-01-01	155.92300000000000
1974-01-01	144.30900000000000
1975-01-01	149.08100000000002
1976-01-01	153.47600000000000
1977-01-01	151.65500000000000
1978-01-01	162.91200000000000
1979-01-01	170.92600000000000
1980-01-01	172.37900000000002
1981-01-01	180.12900000000002
1982-01-01	182.32400000000000
1983-01-01	173.57000000000000
1984-01-01	149.08900000000000
1985-01-01	127.99400000000000
1986-01-01	134.61200000000000
1987-01-01	170.03500000000000
1988-01-01	184.63900000000000
1989-01-01	165.27000000000000
1990-01-01	160.72400000000000
1991-01-01	160.10000000000000
1992-01-01	127.64500000000000
1993-01-01	87.46950000000000
1994-01-01	77.05870000000000
1995-01-01	67.58570000000000
1996-01-01	73.81480000000000
1997-01-01	74.45650000000000
1998-01-01	74.82250000000000
1999-01-01	80.42840000000000
2000-01-01	76.68800000000000
2001-01-01	72.19770000000000
2002-01-01	69.01520000000000
2003-01-01	69.01060000000000
2004-01-01	69.22640000000000
2005-01-01	67.73350000000000
2006-01-01	64.96500000000000
2007-01-01	61.05180000000000
2008-01-01	61.27930000000000
2009-01-01	63.30980000000000
2010-01-01	62.22780000000000
2011-01-01	65.68350000000000
2012-01-01	78.55120000000000
2013-01-01	87.44550000000000
2014-01-01	87.32310000000000
2015-01-01	90.59080000000000
2016-01-01	95.85740000000000