2000

8.1

1993

5.6

2014

7.1

1981

8.0

2013

6.8

2008

7.7

2013

6.6

2006

5.7

2020

7.6

2022

5.2

2018

6.9

2015

7.1

2013

4.0

2013

7.2

2007

7.5

2004

7.5

2006

7.5

2018

7.0

2006

5.0

2016

8.3