| Year |
Month |
Pounds (x1000) |
| 1968 |
December |
15.03 |
|
November |
15.69 |
|
October |
17.42 |
|
September |
21.46 |
|
August |
32.60 |
|
July |
59.11 |
|
June |
50.20 |
|
May |
81.73 |
|
April |
40.72 |
|
March |
27.18 |
|
February |
35.46 |
| 1968 |
January |
15.29 |
| 1967 |
December |
26.76 |
|
November |
19.09 |
|
October |
21.37 |
|
September |
26.54 |
|
August |
50.69 |
|
July |
66.11 |
|
June |
88.09 |
|
May |
32.70 |
|
April |
45.73 |
|
March |
54.33 |
|
February |
41.10 |
| 1967 |
January |
25.18 |
| 1966 |
December |
45.98 |
|
November |
27.26 |
|
October |
31.03 |
|
September |
29.21 |
|
August |
63.54 |
|
July |
81.84 |
|
June |
87.41 |
|
May |
41.79 |
|
April |
21.58 |
|
March |
18.94 |
|
February |
29.93 |
| 1966 |
January |
18.58 |
| 1965 |
December |
32.43 |
|
November |
30.60 |
|
October |
29.39 |
|
September |
31.23 |
|
August |
53.60 |
|
July |
81.12 |
|
June |
39.24 |
|
May |
41.43 |
|
April |
42.72 |
|
March |
24.23 |
|
February |
51.36 |
| 1965 |
January |
36.97 |
| 1964 |
December |
67.70 |
|
November |
18.91 |
|
October |
19.19 |
|
September |
24.34 |
|
August |
50.79 |
|
July |
73.74 |
|
June |
99.11 |
|
May |
35.41 |
|
April |
42.03 |
|
March |
34.52 |
|
February |
16.88 |
| 1964 |
January |
13.10 |
| 1963 |
December |
24.92 |
|
November |
12.14 |
|
October |
12.67 |
|
September |
25.23 |
|
August |
43.33 |
|
July |
69.74 |
|
June |
66.88 |
|
May |
26.17 |
|
April |
21.79 |
|
March |
23.15 |
|
February |
52.26 |
| 1963 |
January |
3.89 |
| 1962 |
December |
19.77 |
|
November |
8.37 |
|
October |
24.80 |
|
September |
61.99 |
|
August |
68.43 |
|
July |
70.12 |
|
June |
70.08 |
|
May |
27.22 |
|
April |
12.74 |
|
March |
10.81 |
|
February |
11.95 |
| 1962 |
January |
1.15 |
| 1961 |
December |
18.87 |
|
November |
12.60 |
|
October |
22.33 |
|
September |
41.87 |
|
August |
64.17 |
|
July |
82.30 |
|
June |
87.34 |
|
May |
31.62 |
|
April |
22.78 |
|
March |
31.92 |
|
February |
18.70 |
| 1961 |
January |
24.50 |
| 1960 |
December |
45.28 |
|
November |
25.53 |
|
October |
26.78 |
|
September |
18.21 |
|
August |
31.67 |
|
July |
49.64 |
|
June |
49.67 |
|
May |
15.09 |
|
April |
18.86 |
|
March |
26.87 |
|
February |
27.75 |
| 1960 |
January |
16.86 |
| 1959 |
December |
41.84 |
|
November |
27.36 |
|
October |
46.14 |
|
September |
38.16 |
|
August |
55.17 |
|
July |
87.59 |
|
June |
81.30 |
|
May |
28.76 |
|
April |
44.58 |
|
March |
32.32 |
|
February |
40.51 |
| 1959 |
January |
39.17 |
| 1958 |
December |
69.20 |
|
November |
29.21 |
|
October |
19.26 |
|
September |
17.61 |
|
August |
29.97 |
|
July |
46.56 |
|
June |
40.84 |
|
May |
43.28 |
|
April |
36.55 |
|
March |
10.26 |
|
February |
28.63 |
| 1958 |
January |
35.40 |
| 1957 |
December |
9.37 |
|
November |
18.14 |
|
October |
27.93 |
|
September |
29.12 |
|
August |
36.14 |
|
July |
70.03 |
|
June |
52.98 |
|
May |
44.05 |
|
April |
41.53 |
|
March |
31.28 |
|
February |
14.36 |
| 1957 |
January |
6.99 |
| 1956 |
December |
33.19 |
|
November |
18.13 |
|
October |
12.10 |
|
September |
24.59 |
|
August |
47.36 |
|
July |
72.42 |
|
June |
23.72 |
|
May |
15.86 |
|
April |
11.15 |
|
March |
9.71 |
|
February |
31.26 |
| 1956 |
January |
8.40 |
| 1955 |
December |
14.85 |
|
November |
20.60 |
|
October |
24.56 |
|
September |
29.95 |
|
August |
88.22 |
|
July |
198.24 |
|
June |
97.21 |
|
May |
17.79 |
|
April |
13.39 |
|
March |
10.51 |
|
February |
9.95 |
| 1955 |
January |
9.16 |
| 1954 |
December |
16.60 |
|
November |
17.60 |
|
October |
29.63 |
|
September |
9.90 |
|
August |
57.13 |
|
July |
125.39 |
|
June |
85.57 |
|
May |
25.89 |
|
April |
15.04 |
|
March |
21.75 |
|
February |
39.46 |
| 1954 |
January |
23.80 |
| 1953 |
December |
48.27 |
|
November |
9.57 |
|
October |
21.66 |
|
September |
49.87 |
|
August |
77.78 |
|
July |
99.99 |
|
June |
89.93 |
|
May |
45.87 |
|
April |
36.94 |
|
March |
27.86 |
|
February |
64.23 |
| 1953 |
January |
46.52 |
| 1952 |
December |
25.33 |
|
November |
22.63 |
|
October |
41.53 |
|
September |
82.55 |
|
August |
150.88 |
|
July |
153.59 |
|
June |
116.33 |
|
May |
66.45 |
|
April |
58.12 |
|
March |
35.86 |
|
February |
46.85 |
| 1952 |
January |
45.20 |
| 1951 |
December |
69.63 |
|
November |
48.02 |
|
October |
55.43 |
|
September |
103.99 |
|
August |
59.09 |
|
July |
85.66 |
|
June |
102.23 |
|
May |
77.54 |
|
April |
51.50 |
|
March |
36.84 |
|
February |
28.63 |
| 1951 |
January |
11.72 |
| 1950 |
December |
30.52 |
|
November |
49.77 |
|
October |
51.85 |
|
September |
76.11 |
|
August |
127.90 |
|
July |
99.57 |
|
June |
84.75 |
|
May |
49.52 |
|
April |
42.62 |
|
March |
9.77 |
|
February |
21.16 |
| 1950 |
January |
12.64 |
| 1949 |
December |
58.73 |
|
November |
35.94 |
|
October |
44.89 |
|
September |
35.54 |
|
August |
75.65 |
|
July |
59.16 |
|
June |
89.64 |
|
May |
62.55 |
|
April |
50.05 |
|
March |
36.40 |
|
February |
81.59 |
| 1949 |
January |
107.27 |
| 1948 |
December |
90.12 |
|
November |
91.14 |
|
October |
60.06 |
|
September |
59.11 |
|
August |
54.40 |
|
July |
78.49 |
|
June |
73.04 |
|
May |
28.85 |
|
April |
51.94 |
|
March |
69.40 |
|
February |
54.23 |
| 1948 |
January |
69.73 |
|