1984

6.5

2003

6.2

2013

6.1

2006

7.0

2020

6.9

1975

4.5

2021

6.2

2021

5.7

2014

5.9

1965

6.8

1993

5.4

2014

6.2

6.3

2023

0.0

2014

5.4

2022

4.5

2008

4.4

2000

7.2

1966

5.6