1950

8.1

2006

5.5

1967

6.8

1933

6.2

1964

6.0

2008

6.9

1963

6.3

1983

4.5

1987

7.0

1995

6.3

1968

6.0

1960

6.0

1999

0.0

1978

0.0

1950

8.1

1990

6.9

1966

7.0

1985

5.5

1953

6.6

1964

7.6