1976

7.0

2023

9.6

2017

7.1

2004

7.2

1969

7.4

2009

7.6

1958

6.9

2013

7.0

2020

8.1

1972

7.7

2021

6.7

2021

7.8

2005

6.8

2003

6.6

2016

7.4

2019

7.0

2017

6.3

1985

7.2

2020

7.8