1980

7.3

2016

5.1

2012

6.1

2010

8.1

2019

8.7

2016

8.6

2013

8.5

2011

8.3

2013

8.7

2008

8.9

2021

7.6

1989

8.0

2022

8.0

1994

8.4

2002

8.3

2011

8.3

2007

7.9

2016

8.4

2015

8.2

2019

8.5