1989

8.3

1955

7.5

1983

7.2

1979

7.0

1986

7.9

2003

4.3

2002

7.3

2002

8.4

2007

6.5

2007

7.9

2022

0.0

2021

2.5

2021

6.2

2020

6.9

2023

5.5

2016

6.5

2013

6.6

2019

6.8

1996

6.7

2018

5.7