2017

8.0

1999

7.4

1992

8.2

2016

8.6

2008

8.9

1998

7.1

2005

8.3

2012

6.8

2000

7.6

1996

7.5

2007

7.4

2005

7.5

2013

7.5

2016

5.9

1987

8.4

2010

8.0

2020

7.9

1995

8.2

2016

7.7

1993

7.7