1981

0.0

1985

5.2

1988

7.2

1979

4.8

1977

5.9

1991

6.1

1978

6.3

1986

4.7

1965

7.2

1958

0.0

1978

6.0

1978

5.6

1994

4.7

2012

7.4

1977

6.2

1993

6.3

2000

5.6

1977

5.5

1988

6.8

1993

7.1

1962

0.0

1998

3.0

1982

5.5