2021

7.4

2009

7.4

2015

6.1

1970

7.6

2011

7.1

1989

6.0

1940

7.1

1990

6.5

1947

7.7

1952

7.7

1974

7.5

1959

8.1

2010

6.6

1967

6.8

1990

6.5

1937

6.6

1997

6.7

2012

6.9

2011

6.9

1924

8.1