1983

6.5

1990

6.7

1982

6.9

2017

6.8

2012

7.8

1997

6.8

2003

3.2

2006

6.8

1979

7.0

1945

7.2

1968

6.2

1991

7.4

1948

6.6

1943

6.0

2021

2.8

2000

7.3

2006

4.4

1972

6.8

1969

6.8

1997

5.6