Annual Percent
1966-01-01 90.64590000000000
1967-01-01 93.16970000000000
1968-01-01 96.99780000000000
1969-01-01 92.76290000000000
1970-01-01 84.01770000000000
1971-01-01 77.62060000000000
1972-01-01 77.56000000000000
1973-01-01 82.36740000000000
1974-01-01 82.17230000000000
1975-01-01 80.27260000000000
1976-01-01 80.82530000000000
1977-01-01 83.33620000000000
1978-01-01 81.02870000000000
1979-01-01 73.58500000000000
1980-01-01 69.60610000000000
1981-01-01 69.45370000000000
1982-01-01 70.27520000000000
1983-01-01 69.92270000000000
1984-01-01 67.69740000000000
1985-01-01 59.31550000000000
1986-01-01 49.44850000000000
1987-01-01 54.95560000000000
1988-01-01 60.37610000000000
1989-01-01 67.51650000000000
1990-01-01 62.75390000000000
1991-01-01 58.63020000000000
1992-01-01 58.19450000000000
1993-01-01 54.96540000000000
1994-01-01 57.40640000000000
1995-01-01 58.45370000000000
1996-01-01 56.85530000000000
1997-01-01 59.05270000000000
1998-01-01 65.94930000000000
1999-01-01 69.02250000000000
2000-01-01 69.64030000000000
2001-01-01 71.75399999999999
2002-01-01 76.91410000000000
2003-01-01 82.32640000000000
2004-01-01 83.47260000000000
2005-01-01 82.53850000000000
2006-01-01 82.16140000000000
2007-01-01 84.98440000000000
2008-01-01 87.91350000000000
2009-01-01 86.32040000000000
2010-01-01 85.72830000000000
2011-01-01 87.33880000000000
2012-01-01 87.00320000000000
2013-01-01 86.61200000000001
2014-01-01 86.78870000000000
2015-01-01 86.25110000000000
2016-01-01 86.19660000000000