1941

5.3

1953

7.3

1960

8.2

2018

8.0

1990

5.7

1962

7.9

1967

7.7

1963

7.9

1991

8.3

2020

7.2

2019

8.5

2001

5.9

2013

7.8

2006

8.2

1995

8.1

1987

7.8

1925

7.6

1974

7.1

2019

8.0

2018

6.8