1984

7.5

1998

7.1

1992

6.7

1982

7.1

1996

7.8

2002

7.9

1966

6.1

2002

7.1

2006

7.8

1989

8.2

2021

7.3

2014

6.0

2015

8.3

2017

7.4

2008

5.0

1962

7.1

2020

7.4

1973

0.0

0.0

2023

0.0