1957

8.2

1966

8.0

1975

0.0

2018

5.8

2020

6.3

2006

6.7

1948

5.0

2006

5.8

2001

7.0

1986

5.0

1986

7.5

1967

7.7

1968

6.9

1988

2.0

1953

6.0

2001

3.6

2014

5.2

2010

6.4

1978

6.5

2021

6.6