1986

7.7

2007

6.1

1970

3.2

1983

5.6

1987

6.8

1979

6.7

1985

6.7

1984

7.5

1986

4.6

1968

0.0

1998

3.7

1980

5.0

1986

5.2

1986

7.1

1988

4.9

1997

4.7

1993

10.0