2010

7.7

2004

8.0

1997

7.2

1988

6.4

2010

6.4

2012

6.6

1985

8.3

1979

8.2

2017

7.6

1941

7.1

2009

6.3

1955

7.2

1991

6.9

2006

8.2

2008

6.2

2001

7.8

2007

7.4

2010

7.2

1992

6.9

2008

7.7