2016

6.7

2011

5.7

2007

5.7

5.8

2017

5.9

2012

6.4

1989

6.1

1996

5.4

5.4

2022

6.3

2018

7.2

1990

6.6

2017

6.7

2013

5.8

2001

8.0

2020

6.2

1980

5.9