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

4.0

1981

7.5

1972

4.9

1995

5.0

1999

5.0

1976

5.9

1975

5.7

1970

5.1

2000

7.3

1969

5.6

1966

5.9

1975

0.0

1977

7.1

1961

0.0

1984

5.9

1986

5.5

1991

4.1

1993

7.0