2009

7.4

2002

7.4

2014

7.8

2008

8.9

2012

8.0

1998

7.2

2005

8.6

2020

6.5

2013

7.7

2009

7.7

2011

8.5

1999

7.3

1984

7.5

2011

8.1

1990

8.1

2009

7.9

1997

8.1

1999

7.9

2014

7.3

1999

8.1