1995

7.8

1982

7.6

1994

6.0

1991

0.0

1993

7.1

1984

4.8

1979

6.8

1993

7.0

1985

7.7

1993

7.9

1987

8.4

1995

7.8

1985

3.0

1986

6.5

1977

6.9

1996

4.4