1986

6.5

1988

0.0

2012

6.1

1997

6.0

1987

7.3

1995

5.3

1996

6.2

1996

0.0

1999

6.4

1993

6.7

2001

5.4

1988

6.9

1985

6.6

1983

7.0

1995

5.6

2010

7.7

2001

6.6