| Year |
Month |
Pounds (x1000) |
| 1989 |
December |
205.33 |
|
November |
257.30 |
|
October |
255.00 |
|
September |
327.89 |
|
August |
382.38 |
|
July |
520.20 |
|
June |
401.64 |
|
May |
214.25 |
|
April |
147.39 |
|
March |
132.34 |
|
February |
182.70 |
| 1989 |
January |
190.74 |
| 1988 |
December |
251.87 |
|
November |
294.93 |
|
October |
362.94 |
|
September |
329.31 |
|
August |
404.97 |
|
July |
536.31 |
|
June |
686.10 |
|
May |
304.12 |
|
April |
124.10 |
|
March |
229.75 |
|
February |
227.92 |
| 1988 |
January |
306.24 |
| 1987 |
December |
313.10 |
|
November |
193.82 |
|
October |
289.21 |
|
September |
335.19 |
|
August |
522.93 |
|
July |
378.00 |
|
June |
335.00 |
|
May |
339.78 |
|
April |
125.97 |
|
March |
171.98 |
|
February |
365.36 |
| 1987 |
January |
169.86 |
| 1986 |
December |
226.74 |
|
November |
59.87 |
|
October |
131.47 |
|
September |
282.05 |
|
August |
425.56 |
|
July |
301.63 |
|
June |
330.85 |
|
May |
311.26 |
|
April |
74.61 |
|
March |
60.49 |
|
February |
46.57 |
| 1986 |
January |
21.19 |
| 1985 |
December |
19.14 |
|
November |
18.28 |
|
October |
57.06 |
|
September |
268.20 |
|
August |
452.01 |
|
July |
446.73 |
|
June |
204.84 |
|
May |
261.48 |
|
April |
171.09 |
|
March |
57.29 |
|
February |
17.33 |
| 1985 |
January |
69.64 |
| 1984 |
December |
61.06 |
|
November |
226.11 |
|
October |
281.42 |
|
September |
506.17 |
|
August |
616.27 |
|
July |
673.41 |
|
June |
340.47 |
|
May |
256.10 |
|
April |
212.09 |
|
March |
230.11 |
|
February |
97.29 |
| 1984 |
January |
81.09 |
| 1983 |
December |
149.27 |
|
November |
200.00 |
|
October |
351.75 |
|
September |
277.75 |
|
August |
492.39 |
|
July |
537.46 |
|
June |
247.23 |
|
May |
155.25 |
|
April |
90.60 |
|
March |
83.67 |
|
February |
38.14 |
| 1983 |
January |
74.73 |
| 1982 |
December |
98.40 |
|
November |
145.45 |
|
October |
148.20 |
|
September |
263.83 |
|
August |
377.20 |
|
July |
661.17 |
|
June |
585.04 |
|
May |
306.70 |
|
April |
269.71 |
|
March |
112.81 |
|
February |
37.26 |
| 1982 |
January |
136.94 |
| 1981 |
December |
247.63 |
|
November |
112.52 |
|
October |
172.54 |
|
September |
267.39 |
|
August |
794.94 |
|
July |
787.84 |
|
June |
543.78 |
|
May |
448.30 |
|
April |
366.60 |
|
March |
209.44 |
|
February |
70.80 |
| 1981 |
January |
67.31 |
| 1980 |
December |
183.76 |
|
November |
284.84 |
|
October |
381.43 |
|
September |
301.39 |
|
August |
793.52 |
|
July |
761.49 |
|
June |
700.99 |
|
May |
270.04 |
|
April |
107.30 |
|
March |
50.53 |
|
February |
101.75 |
| 1980 |
January |
123.70 |
| 1979 |
December |
223.39 |
|
November |
98.33 |
|
October |
216.66 |
|
September |
323.58 |
|
August |
1014.5 |
|
July |
1425.9 |
|
June |
948.74 |
|
May |
1065.4 |
|
April |
422.03 |
|
March |
341.71 |
|
February |
193.23 |
| 1979 |
January |
183.50 |
| 1978 |
December |
329.17 |
|
November |
518.54 |
|
October |
310.32 |
|
September |
348.54 |
|
August |
630.64 |
|
July |
923.81 |
|
June |
934.94 |
|
May |
1044.8 |
|
April |
845.10 |
|
March |
166.01 |
|
February |
194.20 |
| 1978 |
January |
496.65 |
| 1977 |
December |
344.08 |
|
November |
234.69 |
|
October |
348.76 |
|
September |
603.25 |
|
August |
1051.1 |
|
July |
856.39 |
|
June |
834.20 |
|
May |
695.81 |
|
April |
687.78 |
|
March |
213.27 |
|
February |
484.58 |
| 1977 |
January |
1231.6 |
| 1976 |
December |
788.57 |
|
November |
643.14 |
|
October |
559.09 |
|
September |
1007.7 |
|
August |
1129.0 |
|
July |
1134.9 |
|
June |
2079.8 |
|
May |
957.62 |
|
April |
343.71 |
|
March |
532.93 |
|
February |
240.94 |
| 1976 |
January |
355.05 |
| 1975 |
December |
101.47 |
|
November |
74.64 |
|
October |
334.20 |
|
September |
585.26 |
|
August |
595.08 |
|
July |
667.72 |
|
June |
809.99 |
|
May |
526.26 |
|
April |
248.34 |
|
March |
357.52 |
|
February |
349.46 |
| 1975 |
January |
373.62 |
| 1974 |
December |
210.73 |
|
November |
237.73 |
|
October |
377.58 |
|
September |
635.64 |
|
August |
972.88 |
|
July |
1405.7 |
|
June |
1168.2 |
|
May |
992.88 |
|
April |
343.17 |
|
March |
367.61 |
|
February |
398.35 |
| 1974 |
January |
313.98 |
| 1973 |
December |
366.96 |
|
November |
601.60 |
|
October |
874.62 |
|
September |
437.15 |
|
August |
1592.3 |
|
July |
2786.2 |
|
June |
2028.4 |
|
May |
985.84 |
|
April |
711.80 |
|
March |
123.05 |
|
February |
111.39 |
| 1973 |
January |
105.47 |
| 1972 |
December |
447.86 |
|
November |
273.47 |
|
October |
776.55 |
|
September |
1131.8 |
|
August |
2091.9 |
|
July |
1824.7 |
|
June |
2196.5 |
|
May |
1168.5 |
|
April |
267.66 |
|
March |
250.14 |
|
February |
227.66 |
| 1972 |
January |
243.23 |
| 1971 |
December |
315.02 |
|
November |
556.06 |
|
October |
821.88 |
|
September |
1037.7 |
|
August |
1515.3 |
|
July |
2875.1 |
|
June |
2967.6 |
|
May |
1966.2 |
|
April |
490.46 |
|
March |
141.67 |
|
February |
387.52 |
| 1971 |
January |
256.44 |
| 1970 |
December |
399.36 |
|
November |
704.05 |
|
October |
790.35 |
|
September |
1001.8 |
|
August |
1017.7 |
|
July |
1315.9 |
|
June |
943.15 |
|
May |
596.51 |
|
April |
238.62 |
|
March |
131.82 |
|
February |
177.26 |
| 1970 |
January |
25.70 |
| 1969 |
December |
213.81 |
|
November |
276.21 |
|
October |
332.06 |
|
September |
400.33 |
|
August |
1019.0 |
|
July |
1341.5 |
|
June |
1098.0 |
|
May |
682.80 |
|
April |
297.93 |
|
March |
78.86 |
|
February |
42.18 |
| 1969 |
January |
171.11 |
|