1984

6.6

1985

6.1

1980

8.4

2010

7.3

2022

6.5

2020

6.4

2015

6.4

2006

5.1

2011

6.4

2012

7.1

2008

6.7

2007

6.9

1996

6.5

1983

7.9

2024

7.3

2018

6.3

1939

7.6

1940

7.4

2008

6.2

1991

7.7