1974

7.3

2004

7.4

1977

7.6

1981

8.0

2012

8.6

2023

8.5

1990

7.0

1968

6.8

2018

6.9

2021

7.0

1984

7.7

1962

6.0

2022

0.0

1973

8.2

2014

5.5

2013

1.0

2019

7.4

2003

8.3

2024

7.9

2021

0.0