| Year |
Month |
Pounds (x1000) |
| 1968 |
December |
114.38 |
|
November |
101.97 |
|
October |
62.29 |
|
September |
46.69 |
|
August |
26.68 |
|
July |
19.83 |
|
June |
23.94 |
|
May |
44.75 |
|
April |
36.66 |
|
March |
20.47 |
|
February |
36.73 |
| 1968 |
January |
29.53 |
| 1967 |
December |
41.04 |
|
November |
60.31 |
|
October |
106.22 |
|
September |
51.64 |
|
August |
17.04 |
|
July |
21.32 |
|
June |
26.23 |
|
May |
57.56 |
|
April |
80.37 |
|
March |
65.13 |
|
February |
72.97 |
| 1967 |
January |
46.14 |
| 1966 |
December |
136.35 |
|
November |
75.33 |
|
October |
87.93 |
|
September |
60.55 |
|
August |
24.55 |
|
July |
38.22 |
|
June |
52.76 |
|
May |
89.30 |
|
April |
90.19 |
|
March |
43.36 |
|
February |
35.50 |
| 1966 |
January |
28.55 |
| 1965 |
December |
89.63 |
|
November |
58.66 |
|
October |
68.93 |
|
September |
73.52 |
|
August |
52.92 |
|
July |
63.65 |
|
June |
90.96 |
|
May |
73.67 |
|
April |
46.53 |
|
March |
64.04 |
|
February |
47.71 |
| 1965 |
January |
43.62 |
| 1964 |
December |
110.10 |
|
November |
95.22 |
|
October |
104.72 |
|
September |
62.32 |
|
August |
52.41 |
|
July |
12.61 |
|
June |
29.62 |
|
May |
65.29 |
|
April |
99.20 |
|
March |
80.34 |
|
February |
81.34 |
| 1964 |
January |
46.21 |
| 1963 |
December |
111.07 |
|
November |
90.71 |
|
October |
88.84 |
|
September |
58.23 |
|
August |
11.19 |
|
July |
11.17 |
|
June |
48.72 |
|
May |
79.11 |
|
April |
74.39 |
|
March |
221.24 |
|
February |
102.66 |
| 1963 |
January |
50.73 |
| 1962 |
December |
202.99 |
|
November |
173.84 |
|
October |
124.94 |
|
September |
41.58 |
|
August |
15.17 |
|
July |
38.90 |
|
June |
54.20 |
|
May |
115.75 |
|
April |
161.52 |
|
March |
147.32 |
|
February |
86.96 |
| 1962 |
January |
0.00 |
| 1961 |
December |
243.31 |
|
November |
94.48 |
|
October |
67.95 |
|
September |
47.46 |
|
August |
54.63 |
|
July |
50.94 |
|
June |
67.36 |
|
May |
109.06 |
|
April |
104.91 |
|
March |
98.33 |
|
February |
59.21 |
| 1961 |
January |
39.75 |
| 1960 |
December |
127.43 |
|
November |
102.80 |
|
October |
93.74 |
|
September |
78.19 |
|
August |
38.68 |
|
July |
61.82 |
|
June |
77.72 |
|
May |
159.53 |
|
April |
196.97 |
|
March |
157.85 |
|
February |
109.33 |
| 1960 |
January |
60.53 |
| 1959 |
December |
203.79 |
|
November |
106.37 |
|
October |
122.50 |
|
September |
65.30 |
|
August |
46.31 |
|
July |
66.21 |
|
June |
104.00 |
|
May |
90.13 |
|
April |
108.87 |
|
March |
153.37 |
|
February |
195.57 |
| 1959 |
January |
56.08 |
| 1958 |
December |
222.78 |
|
November |
160.88 |
|
October |
210.66 |
|
September |
127.10 |
|
August |
60.73 |
|
July |
65.29 |
|
June |
124.19 |
|
May |
147.84 |
|
April |
192.06 |
|
March |
94.50 |
|
February |
104.77 |
| 1958 |
January |
77.29 |
| 1957 |
December |
207.74 |
|
November |
222.12 |
|
October |
207.24 |
|
September |
129.51 |
|
August |
43.56 |
|
July |
45.43 |
|
June |
88.72 |
|
May |
149.31 |
|
April |
188.32 |
|
March |
153.46 |
|
February |
122.85 |
| 1957 |
January |
69.34 |
| 1956 |
December |
369.73 |
|
November |
244.63 |
|
October |
192.47 |
|
September |
249.30 |
|
August |
125.40 |
|
July |
65.37 |
|
June |
90.07 |
|
May |
165.22 |
|
April |
151.69 |
|
March |
246.46 |
|
February |
226.06 |
| 1956 |
January |
136.59 |
| 1955 |
December |
427.96 |
|
November |
240.18 |
|
October |
226.36 |
|
September |
177.34 |
|
August |
74.77 |
|
July |
120.63 |
|
June |
88.14 |
|
May |
100.80 |
|
April |
185.25 |
|
March |
208.66 |
|
February |
122.32 |
| 1955 |
January |
229.25 |
| 1954 |
December |
517.89 |
|
November |
368.96 |
|
October |
246.02 |
|
September |
111.29 |
|
August |
89.27 |
|
July |
76.91 |
|
June |
130.00 |
|
May |
228.75 |
|
April |
371.23 |
|
March |
208.70 |
|
February |
264.68 |
| 1954 |
January |
137.18 |
| 1953 |
December |
481.17 |
|
November |
308.36 |
|
October |
218.05 |
|
September |
105.89 |
|
August |
99.37 |
|
July |
147.88 |
|
June |
175.61 |
|
May |
296.38 |
|
April |
291.14 |
|
March |
227.62 |
|
February |
291.33 |
| 1953 |
January |
186.48 |
| 1952 |
December |
378.23 |
|
November |
177.77 |
|
October |
215.81 |
|
September |
118.22 |
|
August |
73.48 |
|
July |
71.07 |
|
June |
95.29 |
|
May |
217.61 |
|
April |
308.11 |
|
March |
128.36 |
|
February |
175.88 |
| 1952 |
January |
209.78 |
| 1951 |
December |
356.75 |
|
November |
182.23 |
|
October |
199.29 |
|
September |
109.01 |
|
August |
96.22 |
|
July |
112.35 |
|
June |
108.17 |
|
May |
195.32 |
|
April |
171.83 |
|
March |
129.06 |
|
February |
183.49 |
| 1951 |
January |
130.32 |
| 1950 |
December |
269.18 |
|
November |
135.45 |
|
October |
138.69 |
|
September |
96.42 |
|
August |
86.87 |
|
July |
110.34 |
|
June |
148.58 |
|
May |
174.41 |
|
April |
138.08 |
|
March |
17.89 |
|
February |
235.05 |
| 1950 |
January |
110.61 |
| 1949 |
December |
292.76 |
|
November |
189.50 |
|
October |
125.83 |
|
September |
36.83 |
|
August |
16.37 |
|
July |
11.67 |
|
June |
35.69 |
|
May |
60.30 |
|
April |
49.54 |
|
March |
66.74 |
|
February |
75.12 |
| 1949 |
January |
184.16 |
| 1948 |
December |
86.01 |
|
November |
68.76 |
|
October |
36.95 |
|
September |
17.80 |
|
August |
14.02 |
|
July |
14.22 |
|
June |
24.87 |
|
May |
26.23 |
|
April |
65.63 |
|
March |
60.34 |
|
February |
80.07 |
| 1948 |
January |
53.11 |
|