1956

7.0

1972

7.9

2000

7.1

1952

6.7

1980

6.8

1978

6.7

2020

7.0

1926

7.9

1917

0.0

1935

5.6

1980

6.0

2007

7.1

1966

3.8

2002

6.9

1957

7.2

1970

2.8

2007

6.8

1964

7.4

2003

7.5

0.0