2013

6.3

1986

6.7

1982

6.9

1963

7.5

1940

7.0

1983

6.6

1961

8.0

2011

7.1

1978

6.7

1957

8.2

1979

6.8

2017

5.9

1984

5.6

2004

5.7

2011

6.2

1982

5.2

1980

6.4

2021

6.3

2019

6.6

2018

7.0