1992

5.5

1997

5.1

1997

3.3

1984

6.1

1991

5.7

1959

6.7

2007

0.0

1990

5.8

1963

3.7

1972

0.0

1974

7.5

1982

7.5

1979

7.0

1999

7.9

1991

0.0