1996

5.5

1987

5.2

1970

4.6

1981

8.0

1965

4.7

1996

4.6

1968

7.1

1981

0.0

1976

6.0

1979

6.7

1990

7.4

1977

6.3

1984

7.5

1989

9.0

1979

0.0

1974

5.3

1983

6.4

1982

6.4

1958

6.2

1967

7.3

1973

6.9

1971

3.9

1975

6.7

1969

7.6

1964

7.1

1964

0.0