1973

6.5

1951

7.5

1975

5.2

1972

6.4

1985

4.0

1967

4.7

1979

1.0

1965

7.8

1978

5.0

1978

4.8

1958

4.0

1974

6.2

1968

5.7

1968

0.0

2007

7.3

1964

3.1

1972

7.0

1968

5.7

1975

7.3

1970

7.5

1977

6.9

1973

7.2

1975

6.1