1987

0.0

1988

0.0

1988

5.4

1994

3.6

1984

5.2

2000

6.0

1989

4.0

2011

5.0

2012

6.0

2007

4.4

1983

7.0

1986

9.0

2001

1.0

2003

0.0

1997

0.0