1979

6.9

1959

7.9

1997

7.4

1995

7.7

1979

7.7

2000

7.1

1961

7.3

1963

7.0

1964

7.0

1990

8.5

1939

7.9

2014

6.1

2014

6.1

2002

6.6

1942

7.5

1943

5.4

2019

6.6

2020

7.2

1963

7.1

1984

7.0