1983

5.4

2003

5.7

1969

7.0

1967

6.6

1972

3.5

1968

6.9

1979

8.0

1976

0.0

1990

4.2

1981

7.5

1972

5.4

1995

5.0

1999

5.0

1976

5.8

1975

5.8

1970

5.1

2000

7.3

1969

5.6

1966

6.0

1975

0.0

1998

9.0

1977

7.2

1961

0.0

1984

6.0

1986

5.6

1991

4.3

1993

7.0