1999

3.7

1968

6.5

1963

5.9

1988

2.4

1971

6.6

1970

4.7

1957

5.2

1932

6.7

1966

6.0

1926

0.0

1971

3.0

1962

0.0

1956

0.0

1970

3.0

1970

0.0

1968

0.0

1967

5.0

1972

1.0

1980

0.0

2001

4.5