| Year |
Month |
Pounds (x1000) |
| 1989 |
December |
308.46 |
|
November |
246.98 |
|
October |
175.99 |
|
September |
60.04 |
|
August |
26.17 |
|
July |
14.73 |
|
June |
41.44 |
|
May |
77.90 |
|
April |
100.32 |
|
March |
129.02 |
|
February |
197.61 |
| 1989 |
January |
153.88 |
| 1988 |
December |
83.57 |
|
November |
22.96 |
|
October |
40.93 |
|
September |
13.77 |
|
August |
1.33 |
|
July |
7.15 |
|
June |
14.18 |
|
May |
7.04 |
|
April |
25.75 |
|
March |
25.98 |
|
February |
24.20 |
| 1988 |
January |
21.08 |
| 1987 |
December |
34.83 |
|
November |
23.13 |
|
October |
11.24 |
|
September |
0.60 |
|
August |
2.20 |
|
July |
2.04 |
|
June |
8.90 |
|
May |
10.97 |
|
April |
19.30 |
|
March |
26.36 |
|
February |
12.60 |
| 1987 |
January |
12.38 |
| 1986 |
December |
14.12 |
|
November |
15.71 |
|
October |
19.58 |
|
September |
2.25 |
|
August |
4.60 |
|
July |
14.86 |
|
June |
18.68 |
|
May |
87.55 |
|
April |
17.84 |
|
March |
29.33 |
|
February |
28.21 |
| 1986 |
January |
27.72 |
| 1985 |
December |
21.65 |
|
November |
2.64 |
|
October |
11.30 |
|
September |
3.57 |
|
August |
0.30 |
|
July |
14.59 |
|
June |
24.73 |
|
May |
14.25 |
|
April |
27.03 |
|
March |
10.82 |
|
February |
27.80 |
| 1985 |
January |
10.61 |
| 1984 |
December |
13.91 |
|
November |
4.63 |
|
October |
8.22 |
|
September |
14.57 |
|
August |
2.48 |
|
July |
6.90 |
|
June |
6.41 |
|
May |
5.79 |
|
April |
13.48 |
|
March |
14.83 |
|
February |
17.60 |
| 1984 |
January |
12.63 |
| 1983 |
December |
32.09 |
|
November |
14.97 |
|
October |
28.80 |
|
September |
58.18 |
|
August |
11.27 |
|
July |
13.71 |
|
June |
21.02 |
|
May |
28.31 |
|
April |
12.05 |
|
March |
29.67 |
|
February |
7.46 |
| 1983 |
January |
6.51 |
| 1982 |
December |
11.47 |
|
November |
4.14 |
|
October |
14.40 |
|
September |
5.63 |
|
August |
6.17 |
|
July |
0.06 |
|
June |
0.44 |
|
May |
1.20 |
|
April |
4.76 |
|
March |
5.11 |
|
February |
12.42 |
| 1982 |
January |
4.70 |
| 1981 |
December |
6.81 |
|
November |
5.67 |
|
October |
3.48 |
|
September |
0.57 |
|
August |
0.28 |
|
July |
0.50 |
|
June |
0.90 |
|
May |
1.34 |
|
April |
5.87 |
|
March |
1.01 |
|
February |
0.40 |
| 1981 |
January |
2.53 |
| 1980 |
December |
1.75 |
|
November |
1.67 |
|
October |
1.94 |
|
September |
0.21 |
|
August |
0.04 |
|
July |
0.00 |
|
June |
0.31 |
|
May |
0.47 |
|
April |
0.04 |
|
March |
0.01 |
|
February |
0.18 |
| 1980 |
January |
3.44 |
| 1979 |
December |
8.14 |
|
November |
1.02 |
|
October |
0.71 |
|
September |
12.19 |
|
August |
5.57 |
|
July |
2.52 |
|
June |
3.73 |
|
May |
14.30 |
|
April |
26.50 |
|
March |
40.03 |
|
February |
48.44 |
| 1979 |
January |
22.48 |
| 1978 |
December |
61.26 |
|
November |
49.03 |
|
October |
60.21 |
|
September |
19.58 |
|
August |
13.00 |
|
July |
11.60 |
|
June |
10.34 |
|
May |
34.61 |
|
April |
37.46 |
|
March |
33.37 |
|
February |
57.38 |
| 1978 |
January |
44.67 |
| 1977 |
December |
93.56 |
|
November |
76.00 |
|
October |
65.11 |
|
September |
41.64 |
|
August |
33.82 |
|
July |
25.21 |
|
June |
43.94 |
|
May |
50.33 |
|
April |
29.63 |
|
March |
11.39 |
|
February |
27.77 |
| 1977 |
January |
31.70 |
| 1976 |
December |
52.12 |
|
November |
40.10 |
|
October |
31.53 |
|
September |
21.06 |
|
August |
17.66 |
|
July |
14.02 |
|
June |
37.29 |
|
May |
39.21 |
|
April |
28.73 |
|
March |
44.40 |
|
February |
47.97 |
| 1976 |
January |
57.39 |
| 1975 |
December |
65.11 |
|
November |
30.03 |
|
October |
20.41 |
|
September |
17.65 |
|
August |
15.73 |
|
July |
18.01 |
|
June |
15.43 |
|
May |
32.87 |
|
April |
27.37 |
|
March |
24.87 |
|
February |
38.07 |
| 1975 |
January |
37.43 |
| 1974 |
December |
78.62 |
|
November |
31.94 |
|
October |
29.82 |
|
September |
16.38 |
|
August |
20.69 |
|
July |
15.89 |
|
June |
36.71 |
|
May |
46.31 |
|
April |
24.33 |
|
March |
46.27 |
|
February |
52.56 |
| 1974 |
January |
12.98 |
| 1973 |
December |
70.83 |
|
November |
43.53 |
|
October |
55.55 |
|
September |
30.85 |
|
August |
14.39 |
|
July |
13.12 |
|
June |
27.24 |
|
May |
49.14 |
|
April |
30.38 |
|
March |
17.37 |
|
February |
31.59 |
| 1973 |
January |
24.66 |
| 1972 |
December |
105.31 |
|
November |
66.24 |
|
October |
45.94 |
|
September |
19.34 |
|
August |
12.74 |
|
July |
26.09 |
|
June |
39.60 |
|
May |
60.49 |
|
April |
14.28 |
|
March |
20.00 |
|
February |
47.06 |
| 1972 |
January |
46.66 |
| 1971 |
December |
95.41 |
|
November |
90.21 |
|
October |
82.38 |
|
September |
37.78 |
|
August |
19.26 |
|
July |
13.31 |
|
June |
27.51 |
|
May |
37.35 |
|
April |
22.06 |
|
March |
11.64 |
|
February |
25.01 |
| 1971 |
January |
10.34 |
| 1970 |
December |
47.51 |
|
November |
63.47 |
|
October |
60.70 |
|
September |
36.99 |
|
August |
19.10 |
|
July |
15.83 |
|
June |
10.75 |
|
May |
21.92 |
|
April |
36.38 |
|
March |
64.45 |
|
February |
70.95 |
| 1970 |
January |
28.71 |
| 1969 |
December |
125.76 |
|
November |
120.30 |
|
October |
114.09 |
|
September |
73.81 |
|
August |
46.94 |
|
July |
15.54 |
|
June |
13.42 |
|
May |
38.25 |
|
April |
31.36 |
|
March |
46.80 |
|
February |
59.75 |
| 1969 |
January |
23.77 |
|