1997

6.3

1998

5.7

1989

7.2

1993

7.1

1992

5.1

1991

5.9

1990

4.5

2000

6.4

1987

8.3

1999

6.6

1996

5.8

1992

5.8

2025

0.0

2001

6.2

1999

6.3

2004

3.7

2003

5.4

1988

8.0

1988

7.3

1987

6.8