1989

6.8

1991

3.8

1981

5.5

1966

4.9

1979

5.6

1986

2.5

1979

0.0

1984

6.0

1979

6.7

1973

7.0

1992

6.2

1993

7.0

1981

7.3

1978

7.2

1968

6.7

1977

4.0

1967

5.8

1968

3.0

2003

5.5

1989

0.0