2001

7.7

1976

7.0

1980

6.7

1992

0.0

1999

7.2

2004

5.0

1991

5.2

1992

0.0

1994

6.7

1986

6.0

1988

0.0

0.0

1994

6.0

1996

3.0

1994

0.0