1993

7.5

1947

7.3

1965

7.1

2012

9.7

2006

4.1

1963

7.9

1958

7.0

1972

7.9

1966

7.2

1988

6.1

2020

6.5

2018

5.8

2017

5.1

1956

7.5

1939

7.9

1985

6.5

1955

7.9

2010

7.2

1958

7.6

1986

6.5