1983

6.8

1968

6.5

2015

6.4

2014

6.5

1989

7.8

1990

7.5

1984

7.3

2019

6.2

2024

7.6

2011

6.8

1965

7.2

1977

6.4

1980

5.9

2005

6.3

1995

5.8

2017

6.8

2020

0.0

1977

7.1

1973

6.4

2016

6.5