1955

7.7

1986

6.6

1985

7.4

1975

5.1

1979

0.0

1989

5.8

1985

5.1

1982

1.0

1959

5.6

1979

4.2

1978

7.2

1989

3.0

1958

0.0

1962

6.7

1964

7.2

1985

7.8

1965

7.5

1952

5.4

1988

6.1