| Year |
Month |
Pounds (x1000) |
| 1989 |
December |
192.46 |
|
November |
212.79 |
|
October |
162.21 |
|
September |
201.50 |
|
August |
392.23 |
|
July |
503.91 |
|
June |
503.60 |
|
May |
210.08 |
|
April |
133.84 |
|
March |
155.65 |
|
February |
201.32 |
| 1989 |
January |
172.60 |
| 1988 |
December |
105.51 |
|
November |
70.43 |
|
October |
205.13 |
|
September |
238.41 |
|
August |
230.30 |
|
July |
330.73 |
|
June |
244.88 |
|
May |
178.18 |
|
April |
199.08 |
|
March |
150.96 |
|
February |
198.89 |
| 1988 |
January |
263.88 |
| 1987 |
December |
206.27 |
|
November |
160.36 |
|
October |
240.87 |
|
September |
339.06 |
|
August |
534.66 |
|
July |
485.55 |
|
June |
504.68 |
|
May |
445.46 |
|
April |
344.12 |
|
March |
235.53 |
|
February |
89.46 |
| 1987 |
January |
74.04 |
| 1986 |
December |
172.87 |
|
November |
88.71 |
|
October |
181.03 |
|
September |
472.94 |
|
August |
771.20 |
|
July |
571.25 |
|
June |
384.08 |
|
May |
389.33 |
|
April |
240.19 |
|
March |
153.67 |
|
February |
125.67 |
| 1986 |
January |
102.44 |
| 1985 |
December |
95.95 |
|
November |
222.21 |
|
October |
201.36 |
|
September |
333.64 |
|
August |
369.72 |
|
July |
179.69 |
|
June |
220.60 |
|
May |
216.29 |
|
April |
194.59 |
|
March |
157.78 |
|
February |
41.24 |
| 1985 |
January |
75.21 |
| 1984 |
December |
63.08 |
|
November |
65.03 |
|
October |
98.99 |
|
September |
156.29 |
|
August |
243.95 |
|
July |
344.32 |
|
June |
303.16 |
|
May |
182.86 |
|
April |
120.34 |
|
March |
163.46 |
|
February |
92.28 |
| 1984 |
January |
82.14 |
| 1983 |
December |
86.92 |
|
November |
78.20 |
|
October |
134.69 |
|
September |
151.84 |
|
August |
225.82 |
|
July |
295.16 |
|
June |
341.27 |
|
May |
163.07 |
|
April |
164.78 |
|
March |
149.02 |
|
February |
57.18 |
| 1983 |
January |
67.92 |
| 1982 |
December |
69.13 |
|
November |
40.21 |
|
October |
70.09 |
|
September |
92.39 |
|
August |
142.60 |
|
July |
238.52 |
|
June |
218.42 |
|
May |
246.22 |
|
April |
179.77 |
|
March |
143.60 |
|
February |
104.68 |
| 1982 |
January |
194.40 |
| 1981 |
December |
178.14 |
|
November |
73.46 |
|
October |
304.25 |
|
September |
155.83 |
|
August |
283.06 |
|
July |
389.66 |
|
June |
327.75 |
|
May |
317.16 |
|
April |
287.72 |
|
March |
158.33 |
|
February |
105.63 |
| 1981 |
January |
136.05 |
| 1980 |
December |
254.74 |
|
November |
122.00 |
|
October |
274.85 |
|
September |
222.42 |
|
August |
211.60 |
|
July |
353.88 |
|
June |
366.67 |
|
May |
283.90 |
|
April |
111.60 |
|
March |
70.72 |
|
February |
88.66 |
| 1980 |
January |
147.43 |
| 1979 |
December |
228.87 |
|
November |
93.58 |
|
October |
96.93 |
|
September |
126.38 |
|
August |
290.57 |
|
July |
416.13 |
|
June |
304.78 |
|
May |
201.19 |
|
April |
88.45 |
|
March |
77.00 |
|
February |
66.82 |
| 1979 |
January |
57.24 |
| 1978 |
December |
98.47 |
|
November |
92.75 |
|
October |
62.68 |
|
September |
124.06 |
|
August |
250.05 |
|
July |
350.39 |
|
June |
365.55 |
|
May |
195.51 |
|
April |
128.13 |
|
March |
45.16 |
|
February |
112.76 |
| 1978 |
January |
186.79 |
| 1977 |
December |
158.58 |
|
November |
101.79 |
|
October |
87.24 |
|
September |
156.18 |
|
August |
298.60 |
|
July |
315.17 |
|
June |
202.81 |
|
May |
136.48 |
|
April |
79.66 |
|
March |
57.57 |
|
February |
204.68 |
| 1977 |
January |
131.64 |
| 1976 |
December |
182.48 |
|
November |
127.93 |
|
October |
195.38 |
|
September |
216.02 |
|
August |
220.53 |
|
July |
186.14 |
|
June |
139.43 |
|
May |
66.24 |
|
April |
34.25 |
|
March |
106.02 |
|
February |
112.90 |
| 1976 |
January |
114.77 |
| 1975 |
December |
133.35 |
|
November |
127.07 |
|
October |
128.55 |
|
September |
172.14 |
|
August |
171.92 |
|
July |
231.77 |
|
June |
205.18 |
|
May |
104.20 |
|
April |
77.09 |
|
March |
38.61 |
|
February |
68.15 |
| 1975 |
January |
99.23 |
| 1974 |
December |
74.30 |
|
November |
105.44 |
|
October |
155.98 |
|
September |
150.69 |
|
August |
109.84 |
|
July |
114.92 |
|
June |
127.45 |
|
May |
72.47 |
|
April |
48.36 |
|
March |
56.92 |
|
February |
54.00 |
| 1974 |
January |
33.04 |
| 1973 |
December |
93.24 |
|
November |
59.14 |
|
October |
72.41 |
|
September |
120.03 |
|
August |
69.06 |
|
July |
95.04 |
|
June |
82.70 |
|
May |
38.52 |
|
April |
32.95 |
|
March |
10.00 |
|
February |
22.99 |
| 1973 |
January |
26.07 |
| 1972 |
December |
47.62 |
|
November |
14.91 |
|
October |
54.65 |
|
September |
68.51 |
|
August |
55.98 |
|
July |
119.02 |
|
June |
119.96 |
|
May |
95.85 |
|
April |
56.16 |
|
March |
31.55 |
|
February |
68.66 |
| 1972 |
January |
51.00 |
| 1971 |
December |
69.39 |
|
November |
42.37 |
|
October |
44.56 |
|
September |
49.03 |
|
August |
99.85 |
|
July |
111.36 |
|
June |
117.54 |
|
May |
80.12 |
|
April |
61.67 |
|
March |
5.83 |
|
February |
103.88 |
| 1971 |
January |
40.98 |
| 1970 |
December |
70.76 |
|
November |
55.02 |
|
October |
62.56 |
|
September |
24.85 |
|
August |
38.04 |
|
July |
88.39 |
|
June |
148.18 |
|
May |
74.81 |
|
April |
33.67 |
|
March |
51.04 |
|
February |
24.42 |
| 1970 |
January |
11.29 |
| 1969 |
December |
29.58 |
|
November |
31.72 |
|
October |
23.44 |
|
September |
19.26 |
|
August |
50.92 |
|
July |
68.30 |
|
June |
69.10 |
|
May |
52.91 |
|
April |
24.39 |
|
March |
16.15 |
|
February |
18.36 |
| 1969 |
January |
8.36 |
|