1984

0.0

1998

6.8

1998

6.8

2020

7.1

2008

6.7

2006

0.0

1985

10.0

1999

0.0

1995

6.0

1991

0.0

1991

6.0

1991

5.1

2012

5.6

2005

6.9

1994

5.5