2017

6.8

1949

8.0

2008

6.1

2020

6.9

1972

7.1

1990

6.4

2010

7.2

2011

5.6

2011

7.1

1985

5.7

1963

6.9

1957

7.5

2015

6.9

1993

5.4

1959

7.3

1955

7.2

2020

6.7

1995

6.5

2005

4.7

1945

7.0