1983

7.2

1997

7.5

2024

5.5

1994

8.7

2019

8.1

2009

7.6

1994

8.3

2018

7.6

2018

7.0

2021

7.8

1988

7.4

1972

8.7

2016

7.6

2008

8.5

2002

7.7

2017

7.8

2007

7.3

2020

7.1

2013

8.0

2002

7.2