1986

6.3

2006

7.4

1993

5.8

1979

7.2

2001

4.1

1991

6.1

1977

0.0

1996

5.5

1993

7.1

1988

7.8

1994

7.8

1981

5.6

1989

5.3

1983

0.0

1995

7.3

2010

6.8

1985

7.7

2000

8.5

1992

4.9

1992

0.0

1988

8.0

1986

6.1

1981

8.0

1988

7.6

2000

7.6

1996

6.2

2001

6.5

1980

5.5