1976

4.8

2007

6.6

2020

7.0

1976

5.6

2011

7.1

1947

6.8

2014

7.5

2009

7.2

2000

6.2

2016

5.4

1970

6.0

2013

8.0

2012

6.5

2018

6.3

7.8

1974

6.3

2022

7.7

2022

7.2

1971

6.8

2012

6.2