2010

7.3

1974

6.3

2007

6.1

2020

6.7

2018

7.2

1966

6.1

2014

7.4

2022

5.8

2021

6.2

2023

7.1

4.6

2017

5.9

2015

6.4

2006

5.9

1976

6.8

2009

5.6

1990

6.5

2014

5.8