1972

2.7

1971

7.0

1955

4.6

1934

0.0

1935

7.3

1940

7.4

1964

0.0

1989

6.1

2005

6.2

1980

0.0

1933

6.1

1934

7.3

1965

8.5

1986

7.0

1950

7.7

1990

7.3

1980

6.3

1961

5.6

1921

0.0

1987

6.4