1982

6.9

1998

0.0

2008

5.3

2011

0.0

1980

5.8

1971

0.0

1975

6.5

1983

0.0

1966

6.0

1969

0.0

1989

7.2

1986

7.1

1977

6.3

1992

7.0

1970

6.5

1978

6.0

1983

0.0