1998

9.0

2010

8.1

2011

10.0

2016

10.0

2014

6.9

1986

9.3

2007

5.3

2019

8.0

2014

8.2

2017

7.9

2007

7.4

1994

6.0

2005

6.8

1999

8.7

2012

6.7

1971

8.1

2003

9.3

2021

7.9

1993

7.8

2007

8.2