2020

5.5

2019

5.4

2018

6.2

1982

6.4

1985

6.2

6.9

2009

6.4

2014

10.0

1993

5.4

5.6

1989

5.7

6.6

2021

7.4

5.6

2017

5.7

1975

5.8

1989

5.9

2014

4.0

2005

7.8

2023

6.3