1968

4.1

1967

3.1

1987

3.8

1972

4.5

1975

5.1

1922

6.1

1976

2.5

1916

6.3

2021

5.1

1973

5.3

1920

4.9

1928

6.0

1934

5.5

1970

3.3

1967

3.7

1978

6.0

1965

6.0

2010

5.2

1918

6.7

1933

5.3