1966

6.7

1968

3.2

1994

6.3

1962

0.0

1975

6.4

1976

0.0

1980

6.3

1984

4.0

1990

0.0

1999

6.8

1979

10.0

1974

3.6

1952

2.5

1961

6.5

1976

5.8

1968

4.4

1981

2.0

1958

6.1

1960

6.3

1967

3.6

1979

6.4

1950

0.0