2008

6.6

1997

7.8

1997

6.8

1954

7.9

2004

6.0

1969

7.8

2006

5.8

1919

0.0

1993

8.6

1975

7.3

1984

8.4

1995

5.2

1996

7.7

2007

7.4

1981

7.0

2007

7.4

1936

8.3

1991

6.7

1989

6.1

2002

6.3