1982

0.0

2017

6.7

1990

5.7

2000

5.6

2005

5.8

2019

6.7

2022

5.6

1974

4.7

2013

0.0

2003

3.7

2007

5.0

1976

6.0

2021

6.0

2023

4.6

2021

1.0