1970

7.0

2004

0.0

2011

7.8

1983

7.7

2009

8.0

2001

8.6

2009

8.3

1962

7.6

2014

6.9

2018

7.3

2014

5.7

2017

6.4

2020

7.9

1997

8.0

2011

6.3

1972

7.3

1984

7.8

1974

7.2

2009

7.3

1981

8.0