1981

6.6

1998

8.2

2002

0.0

1989

5.3

1994

7.8

1985

6.2

1993

5.0

1980

7.3

2004

7.0

1984

4.1

1995

7.5

1979

2.0

1996

7.8

1989

3.9

1991

5.7

1987

4.8

1995

6.5

2001

0.0

2002

6.2

1985

7.7

1981

5.0

1997

10.0