1983

6.8

2023

7.7

2019

8.5

2000

7.8

2010

6.3

1979

8.2

1954

8.4

1954

8.5

1989

8.3

2016

7.5

2019

7.7

2012

8.2

2016

5.9

2015

6.5

2017

6.8

1957

8.5

1988

8.1

2017

7.0

1963

7.7

2016

7.6