1960

2.5

1957

7.4

1985

6.6

1981

5.0

1980

2.0

1969

6.0

1983

6.4

1981

8.0

1982

7.5

1950

1.0

1951

0.0

1975

6.0

1966

7.6

1984

5.5

1948

5.4

1981

0.0

1947

2.0

1994

7.0

1963

5.3

1960

7.6

0.0

1982

6.2

1979

7.0

1978

5.5

1964

7.2

1954

7.5

1969

6.0

1961

5.5

1990

6.9

1978

5.0