1985

7.4

1979

0.0

1977

1.0

1977

6.8

1975

5.5

1981

5.2

1999

1.8

1972

3.3

1966

7.6

1982

5.8

1968

4.7

1971

6.8

1974

5.1

1998

2.3

1974

1.0