1996

6.4

1962

7.3

2007

6.1

1991

6.2

1990

6.7

1993

5.5

2001

7.1

2005

7.0

1997

7.2

2002

6.4

2023

6.0

1966

6.4

1939

5.8

1941

6.2

1987

6.2

2003

7.2

1987

7.2

1974

4.8

1948

6.0

2001

6.3