Annual Percent
1973-01-01 13.224900000000000
1974-01-01 15.677800000000000
1975-01-01 17.998500000000000
1976-01-01 17.654200000000000
1977-01-01 17.206300000000000
1978-01-01 18.596000000000000
1979-01-01 20.586300000000000
1980-01-01 22.560800000000000
1981-01-01 22.938400000000000
1982-01-01 24.022400000000000
1983-01-01 22.500700000000000
1984-01-01 20.538400000000000
1985-01-01 17.555999999999997
1986-01-01 13.654500000000000
1987-01-01 14.684200000000000
1988-01-01 12.645300000000000
1989-01-01 15.978200000000000
1990-01-01 21.327100000000000
1991-01-01 21.618900000000000
1992-01-01 20.018100000000000
1993-01-01 21.208800000000000
1994-01-01 21.050000000000000
1995-01-01 17.598700000000000
1996-01-01 13.831400000000000
1997-01-01 10.869600000000000
1998-01-01 8.031450000000000
1999-01-01 7.004600000000000
2000-01-01 7.019920000000000
2001-01-01 7.320060000000001
2002-01-01 8.286870000000000
2003-01-01 9.275610000000000
2004-01-01 9.873550000000000
2005-01-01 11.800100000000000
2006-01-01 13.008700000000000
2007-01-01 15.065500000000000
2008-01-01 16.057500000000000
2009-01-01 16.423700000000000
2010-01-01 16.606600000000000
2011-01-01 16.611700000000000
2012-01-01 17.175800000000000
2013-01-01 17.924000000000000
2014-01-01 18.848600000000000
2015-01-01 19.296700000000000
2016-01-01 18.846900000000000