1990

7.0

2019

8.2

1983

8.0

2011

6.1

2007

6.7

1984

6.9

2016

7.1

2001

7.8

1988

8.1

2001

8.1

2006

8.6

1980

7.7

2008

7.4

2024

7.5

2006

7.8

1984

8.1

2014

5.9

2023

7.2

2018

8.3

2013

7.7