2004

8.3

1973

8.0

1993

6.6

5.8

1990

7.9

2004

8.6

2012

6.8

1997

7.1

2008

7.5

2014

8.0

2008

8.1

2014

8.3

2010

8.5

2008

7.7

2017

7.2

2015

7.8

2011

7.8

2010

8.2

1999

7.7

2009

8.0