1988

6.9

2005

5.9

1990

0.0

1992

6.0

2000

5.3

2004

6.3

2010

6.8

1987

6.2

1986

6.8

1985

6.7

1987

6.7

1989

5.8

1993

3.0

1995

0.0

2006

5.8

2002

5.0

1996

6.5

1994

6.1

1983

5.2

1982

6.7

1992

0.0

1997

7.0

2001

6.0

1993

6.3

1992

3.0

1993

3.0

1988

6.7

1991

6.0

1988

0.0