1986

4.1

1983

5.8

1970

6.4

1978

4.0

1987

5.9

1968

6.9

1962

2.0

1960

10.0

1971

5.2

1973

3.7

1984

6.4

1960

0.0

2007

7.4

1979

4.0

1996

7.0

1958

5.3

1963

4.3

1976

3.5

1951

5.5

1991

4.5

1993

7.0