2009

5.4

2011

6.4

2021

6.1

1989

5.1

2020

6.0

2014

5.6

2021

7.8

1898

5.8

1966

6.2

1940

7.1

1976

7.5

1949

8.0

1970

6.4

1991

6.3

1959

6.1

1976

6.6

1993

6.5

2021

6.3

2015

6.5

1976

8.0