1949

6.1

2001

7.1

1958

6.8

1983

6.2

1986

6.0

2007

5.0

1974

6.8

1992

6.2

1976

7.3

1990

6.2

1992

6.2

1982

6.3

1997

5.5

1950

6.6

1946

6.7

1949

7.1

1991

6.6

1947

6.8

1986

5.5

1986

6.2