2003

8.1

1996

7.3

1978

6.0

1974

7.0

1990

7.3

1980

6.3

1950

7.7

1976

8.3

1930

7.0

1932

5.0

1931

7.2

1970

0.0

1941

5.3

1970

0.0

1972

7.4

1992

6.6

1986

6.9

1972

7.4

1990

6.6

1934

7.3