1993

10.0

2011

6.9

2019

8.7

2016

8.6

2019

8.5

2018

8.3

2008

8.9

2018

8.5

1989

8.0

2016

8.0

2005

8.2

2017

8.4

2021

7.9

2017

8.2

2016

7.8

2013

8.7

2013

8.1

2017

7.6

2009

8.3

2021

7.6