1989

5.7

1995

3.2

1968

6.5

1991

4.5

1993

0.0

1974

5.8

1968

3.5

1993

3.7

1998

7.1

1967

6.9

1989

4.8

1979

8.2

1981

5.0

1983

6.6

1991

1.0

1988

6.8

1974

6.0