1999

7.9

2000

5.0

1990

7.3

2007

3.0

1997

5.8

1992

6.7

1992

5.5

1998

6.0

1995

4.5

2002

3.8

1988

6.8

1991

5.8

1990

7.0

1998

4.7

1992

0.0