1990

5.8

1989

4.8

1998

6.7

2000

0.0

1989

7.5

1990

7.6

1989

6.7

1993

5.7

2003

6.1

1993

6.7

2000

6.3

1988

7.0

1990

6.8

1994

7.3

1987

6.7

1996

5.5

1994

6.9

1989

7.1

1992

6.8

1988

8.0

2000

5.3

1999

6.8

1989

7.2

1993

6.8

1988

6.7

1991

4.5