1980

6.1

1988

4.8

1975

0.0

1979

7.5

1957

4.8

1971

6.0

1986

7.3

2014

6.6

1979

5.2

1979

6.8

1978

7.0

1993

6.1

1975

6.5

1977

7.5

1973

6.6

1966

7.4

2003

10.0