2010

8.4

2004

7.2

2013

8.0

2006

8.2

1994

8.5

1995

8.4

2001

7.5

1972

8.7

2014

6.2

1957

8.5

1994

8.7

1996

7.9

1993

8.6

1989

7.8

2012

7.4

1994

8.5

2000

8.2

2013

6.8

2009

8.2

1979

8.2