1978

7.2

1952

6.7

2022

5.5

2000

6.9

2003

6.8

1965

6.8

1990

6.1

1975

6.4

1947

7.5

1965

6.4

1990

6.4

2001

4.9

1974

6.5

1939

7.8

1941

7.0

1988

6.0

1989

7.5

2000

5.2

1986

6.0

1958

6.9