Annual Percent
1961-01-01 10.618300000000000
1962-01-01 10.919500000000000
1963-01-01 11.257100000000000
1964-01-01 11.814800000000000
1965-01-01 13.451500000000000
1966-01-01 13.516100000000000
1967-01-01 13.335200000000000
1968-01-01 13.322900000000000
1969-01-01 13.966600000000000
1970-01-01 8.073670000000000
1971-01-01 7.942000000000000
1972-01-01 8.422369999999999
1973-01-01 10.178700000000000
1974-01-01 11.144900000000000
1975-01-01 12.201200000000000
1976-01-01 13.245600000000000
1977-01-01 12.866100000000000
1978-01-01 14.031600000000000
1979-01-01 15.337900000000000
1980-01-01 15.768500000000000
1981-01-01 16.256200000000000
1982-01-01 16.779300000000000
1983-01-01 16.867800000000000
1984-01-01 20.062000000000000
1985-01-01 20.989500000000000
1986-01-01 21.203500000000000
1987-01-01 21.275000000000000
1988-01-01 22.741600000000000
1989-01-01 24.527600000000000
1990-01-01 25.694900000000000
1991-01-01 31.139100000000000
1992-01-01 31.318800000000000
1993-01-01 26.681200000000000
1994-01-01 29.284000000000002
1995-01-01 28.396600000000000
1996-01-01 26.284800000000000
1997-01-01 29.465100000000000
1998-01-01 34.011800000000000
1999-01-01 35.425200000000000
2000-01-01 35.512900000000000
2001-01-01 36.752200000000000
2002-01-01 41.255100000000000
2003-01-01 44.969400000000000
2004-01-01 42.775300000000000
2005-01-01 41.848900000000000
2006-01-01 39.776400000000000
2007-01-01 36.438900000000000
2008-01-01 34.732200000000000