|
Year
|
Chicken
|
|
|
|
1909
|
10.4
|
|
1910
|
11.0
|
|
1911
|
11.1
|
|
1912
|
10.6
|
|
1913
|
10.3
|
|
1914
|
10.3
|
|
1915
|
10.2
|
|
1916
|
9.6
|
|
1917
|
9.4
|
|
1918
|
9.4
|
|
1919
|
10.1
|
|
1920
|
9.7
|
|
1921
|
9.5
|
|
1922
|
10.1
|
|
1923
|
10.4
|
|
1924
|
9.7
|
|
1925
|
10.1
|
|
1926
|
10.1
|
|
1927
|
10.8
|
|
1928
|
10.4
|
|
1929
|
10.1
|
|
1930
|
11.1
|
|
1931
|
10.0
|
|
1932
|
10.2
|
|
1933
|
10.4
|
|
1934
|
9.6
|
|
1935
|
9.3
|
|
1936
|
9.6
|
|
1937
|
9.7
|
|
1938
|
9.0
|
|
1939
|
10.0
|
|
1940
|
10.0
|
|
1941
|
11.0
|
|
1942
|
12.7
|
|
1943
|
16.0
|
|
1944
|
15.3
|
|
1945
|
15.1
|
|
1946
|
13.9
|
|
1947
|
12.5
|
|
1948
|
12.6
|
|
1949
|
13.5
|
|
1950
|
14.3
|
|
1951
|
15.0
|
|
1952
|
15.2
|
|
1953
|
15.1
|
|
1954
|
15.6
|
|
1955
|
14.7
|
|
1956
|
16.8
|
|
1957
|
17.5
|
|
1958
|
19.2
|
| more... |
more... |
|
|
OK to share with attribution
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