1977

7.7

1999

7.2

1968

7.2

2017

7.2

2003

6.2

2021

7.5

1984

7.2

2023

0.0

1974

7.3

1983

3.0

2004

6.6

2017

6.1

2009

5.9

1992

5.7

1976

7.8

2022

7.0

2010

6.5

2014

6.1

2006

6.2

2024

0.0