1983

1.0

1990

0.0

1993

7.2

1998

1.5

2003

0.0

1996

6.3

1985

5.3

1991

3.0

1998

6.0

1988

4.3

1997

1.2

1999

5.6

2014

6.0

1989

5.3

2008

5.5