1994

7.3

1995

6.2

1994

6.7

1994

6.1

1997

0.0

1990

5.6

1985

5.7

1998

3.2

1996

7.0

1987

7.7

1985

7.5

1993

7.0

1996

5.3

1992

6.7

1998

4.4

1987

4.8

1995

7.6

1999

6.6

1993

5.6

1995

5.5

1998

5.3