1976

7.0

1963

7.7

2006

6.4

2001

6.3

1983

8.2

1977

7.0

1974

8.6

2006

8.0

1984

7.5

1996

7.3

1932

6.9

1999

5.7

1987

7.6

1967

6.9

2004

7.4

1993

6.6

2018

5.8

1939

5.8

2003

6.7

1964

0.0