1996

6.5

1997

5.4

1994

1.0

1998

0.0

2004

6.6

1991

0.0

1994

0.0

1995

3.0

1971

6.4

2001

4.0

1993

0.0

1996

1.0

2001

0.0

1995

4.3

1992

3.4