1996

6.4

1994

5.0

2006

0.0

2005

4.0

1997

4.5

2000

4.8

1990

5.2

1984

10.0

1977

6.3

1974

6.0

1996

0.0

1994

5.7

2001

5.5

1990

0.0

1995

3.0

1999

6.8

1988

0.0

1989

6.0

1987

3.7

1970

6.1

1998

7.5

1978

5.5

1991

0.0

1995

0.0