2010

4.9

2020

5.8

2021

1.0

2016

6.7

1990

7.3

2005

3.6

1974

6.4

1987

6.9

2011

0.0

1973

6.8

1994

8.9

2022

9.5

2007

3.3

2021

6.4

1967

2.3

2013

6.0

2014

6.0

2018

6.0

2012

6.0