1975

6.7

1989

8.2

1982

0.0

1981

3.0

1990

0.0

1978

5.2

1985

3.0

1968

0.0

1971

5.0

1984

7.4

1986

7.3

1993

4.8

1973

0.0

1985

6.0

2001

5.9

1986

4.0

1978

5.0