1968

6.9

2000

7.1

2014

3.9

1920

0.0

1983

7.0

2007

6.1

1955

6.6

1938

4.2

1996

6.5

1992

6.8

2019

6.7

1967

7.5

1940

7.8

1997

5.8

2020

8.5

2013

5.8

1964

6.7

1943

6.2

1969

5.9

1982

6.1