1978

7.1

1970

6.9

1966

5.1

1994

7.8

1981

5.6

1982

6.0

1976

5.9

1991

7.6

1979

6.8

1977

6.2

1966

7.6

1984

7.5

1966

5.7

1978

4.7

1989

6.2

1978

7.2

1978

5.8

1979

4.7

1967

6.8

1974

7.5

1977

6.8

1969

5.0