1977

7.6

2014

9.1

2019

7.7

2010

7.8

2019

8.4

2009

5.7

1992

6.8

2014

8.4

2014

8.0

1937

7.0

2018

7.6

2022

8.0

1988

6.3

2017

6.9

1978

6.4

2020

8.9

2015

6.8

1969

6.5

1936

5.8

2021

6.0