1982

0.0

1997

6.3

1988

5.0

1998

5.7

1993

6.0

2001

0.0

2013

4.5

1990

0.0

2000

6.4

1999

6.3

1999

3.2

1999

0.0

1999

3.8

1998

4.0

2004

3.7

2003

5.4

2002

6.0

2014

0.0

2002

0.0

2001

0.0