1992

7.2

2001

7.6

2017

7.2

2011

8.0

1993

7.9

2014

8.2

2010

7.5

2016

8.6

1995

7.8

2017

8.0

1987

7.0

2014

0.0

1986

8.2

2005

8.2

2014

6.7

1985

9.0

2016

7.3

1999

7.9

2008

7.7

2001

7.8