1999

5.4

1992

7.4

2001

7.6

1944

7.6

2005

7.4

2002

6.3

2002

6.7

2006

7.0

1996

5.6

2000

6.5

1979

5.2

1988

7.1

1943

6.7

1997

6.0

1993

6.3

1990

7.4

2007

6.6

1948

7.9

2004

6.6

2005

6.7