1987

5.0

1998

6.0

2020

6.4

2023

8.5

2017

7.3

2021

9.2

2004

6.4

1972

6.3

1980

5.9

1976

5.2

1992

6.5

1988

7.4

2013

7.6

6.7

2017

7.3

2018

10.0

2008

5.8

2021

6.1

2008

7.5

2004

8.4