Annual Percent
1960-01-01 12.225100000000000
1961-01-01 9.681939999999999
1962-01-01 8.735920000000000
1963-01-01 7.556060000000000
1964-01-01 6.674930000000001
1965-01-01 7.346460000000000
1966-01-01 7.157990000000000
1967-01-01 7.971730000000000
1968-01-01 9.320310000000001
1969-01-01 14.764500000000000
1970-01-01 20.403200000000000
1971-01-01 22.850100000000000
1972-01-01 26.065800000000000
1973-01-01 28.222700000000000
1974-01-01 29.431500000000000
1975-01-01 32.789700000000000
1976-01-01 32.448700000000000
1977-01-01 33.426600000000000
1978-01-01 33.253600000000000
1979-01-01 38.702500000000000
1980-01-01 25.847400000000000
1981-01-01 25.752600000000000
1982-01-01 26.913600000000000
1983-01-01 27.539600000000000
1984-01-01 24.596500000000000
1985-01-01 22.236900000000000
1986-01-01 16.158300000000000
1987-01-01 10.270999999999999
1988-01-01 23.964400000000000
1989-01-01 40.878100000000000
1990-01-01 30.885300000000000
1991-01-01 21.478600000000000
1992-01-01 27.502400000000000
1993-01-01 36.777800000000000
1994-01-01 41.760800000000000
1995-01-01 39.816400000000000
1996-01-01 40.134200000000000
1997-01-01 40.123800000000000
1998-01-01 35.510200000000000
1999-01-01 29.663000000000000
2000-01-01 30.208000000000002
2001-01-01 29.841700000000000
2002-01-01 28.035800000000000
2003-01-01 27.884700000000000
2004-01-01 26.806800000000000
2005-01-01 28.530700000000000
2006-01-01 33.804100000000000
2007-01-01 40.894000000000000
2008-01-01 46.485900000000000
2009-01-01 53.078100000000000
2010-01-01 55.408500000000000
2011-01-01 60.069400000000000
2012-01-01 63.960400000000000
2013-01-01 66.339400000000000
2014-01-01 68.054700000000000
2015-01-01 70.177400000000000
2016-01-01 67.826800000000000