2018

6.0

2014

7.0

2019

6.5

2002

7.7

1977

6.6

2021

6.8

1968

7.4

2003

6.2

6.1

1961

8.0

2020

4.7

1987

7.0

7.8

2017

6.1

1959

6.1

1967

6.8

2001

6.9

2000

5.1

2022

6.3

2011

7.4