1961

7.9

1991

8.1

1975

6.8

1985

6.2

2003

6.4

1940

7.6

2015

5.8

1962

7.7

2021

7.4

1984

6.7

2014

6.4

2018

5.9

1938

7.4

1956

7.1

2009

6.5

1971

7.2

2000

6.5

1990

7.2

2013

6.1

2012

9.3