2006

7.2

1971

7.7

7.8

1994

6.2

2001

6.9

2003

7.3

1991

7.5

1981

5.8

1990

6.8

1979

6.3

1965

7.4

1948

8.0

2007

8.1

1997

7.5

1963

7.7

1970

7.5

1957

7.9

1962

7.6

2024

6.4

1963

7.6