1992

7.5

1982

7.6

1994

6.6

1991

6.4

1997

3.0

1991

6.8

1990

0.0

1993

8.0

1992

6.7

1986

5.5

1988

5.4

1993

7.1

1987

8.4

1995

6.5

1988

6.7

2005

4.5

2002

6.3