2004

6.3

1939

7.9

1983

7.9

2004

6.6

2013

7.5

1940

7.1

2009

7.0

2006

6.4

1985

6.6

1995

6.8

1988

7.8

1993

7.6

1991

8.3

1981

6.9

2007

7.2

1988

5.2

1993

7.5

1971

8.2

1976

8.1

1988

6.3