1987

8.1

2014

6.7

1979

8.3

2001

9.0

1982

7.5

1985

6.7

1987

6.5

1979

7.3

1995

6.0

2007

7.0

1983

6.2

2002

7.1

2006

4.2

1989

7.1

2007

0.0

0.0

1985

6.2

1984

7.1

1991

6.9

1988

6.3