1982

10.0

2020

6.8

1988

5.5

2011

3.0

2009

6.1

2003

6.2

5.0

2021

6.2

2009

7.5

2023

6.0

6.4

2017

4.6

2009

7.1

2006

6.4

1977

4.6

1975

4.5

1973

6.3

2020

6.5

6.7

2022

5.8