2001

3.3

1994

8.5

1989

2.5

1996

5.5

1978

2.0

1991

6.0

1995

3.8

1975

8.0

1999

5.3

1978

0.0

2000

8.2

1997

7.0

2012

7.1

1995

4.9

2008

0.0

2000

5.5

1993

6.0

1994

1.0