1977

5.0

1996

6.9

1992

4.3

1977

0.0

1982

5.7

1976

4.0

2001

6.0

1986

6.5

1977

6.0

1985

6.2

1993

6.0

1989

6.6

1982

0.0

1978

6.8

1988

0.0