1992

5.5

1997

4.8

1997

2.7

1984

6.2

1991

5.7

1959

6.8

2007

0.0

1990

5.8

1963

3.3

1972

0.0

1974

7.5

1982

7.4

1979

7.0

1999

7.9

1991

0.0