1992

7.6

2011

6.5

2020

7.0

1985

4.1

2004

8.0

2014

8.0

1982

5.2

1980

0.0

1984

6.6

2002

0.0

2001

7.8

1977

7.4

2024

7.0

2016

5.8

2017

6.8

2017

8.0