2012

6.3

2010

7.4

2013

6.5

2020

4.9

1989

5.7

2011

5.7

2022

4.5

1975

6.3

2022

6.0

2015

8.0

2017

6.9

1999

6.6

2014

7.3

2015

7.9

2000

5.1

2019

6.5

2014

6.2

2006

5.0

2015

5.7

1949

5.1