| Year |
Month |
Pounds (x1000) |
| 2008 |
December |
0.00 |
|
November |
0.00 |
|
October |
0.00 |
|
September |
0.00 |
|
August |
17.80 |
|
July |
79.90 |
|
June |
107.58 |
|
May |
148.79 |
|
April |
165.23 |
|
March |
57.30 |
|
February |
27.69 |
| 2008 |
January |
29.59 |
| 2007 |
December |
34.73 |
|
November |
42.67 |
|
October |
50.29 |
|
September |
47.03 |
|
August |
64.72 |
|
July |
77.19 |
|
June |
109.03 |
|
May |
124.64 |
|
April |
71.94 |
|
March |
39.66 |
|
February |
24.57 |
| 2007 |
January |
28.23 |
| 2006 |
December |
48.13 |
|
November |
43.40 |
|
October |
45.31 |
|
September |
53.34 |
|
August |
65.98 |
|
July |
79.00 |
|
June |
107.40 |
|
May |
182.75 |
|
April |
115.66 |
|
March |
90.27 |
|
February |
33.00 |
| 2006 |
January |
27.07 |
| 2005 |
December |
49.49 |
|
November |
32.56 |
|
October |
32.29 |
|
September |
40.08 |
|
August |
67.14 |
|
July |
75.89 |
|
June |
87.76 |
|
May |
97.78 |
|
April |
119.06 |
|
March |
99.17 |
|
February |
55.40 |
| 2005 |
January |
61.22 |
| 2004 |
December |
49.88 |
|
November |
30.51 |
|
October |
54.89 |
|
September |
71.77 |
|
August |
72.23 |
|
July |
88.76 |
|
June |
120.05 |
|
May |
141.19 |
|
April |
105.49 |
|
March |
59.68 |
|
February |
21.53 |
| 2004 |
January |
36.34 |
| 2003 |
December |
71.79 |
|
November |
27.86 |
|
October |
49.69 |
|
September |
54.10 |
|
August |
61.39 |
|
July |
98.06 |
|
June |
140.47 |
|
May |
175.43 |
|
April |
90.24 |
|
March |
132.90 |
|
February |
58.35 |
| 2003 |
January |
28.93 |
| 2002 |
December |
26.20 |
|
November |
24.17 |
|
October |
34.04 |
|
September |
42.52 |
|
August |
63.49 |
|
July |
100.39 |
|
June |
86.55 |
|
May |
111.38 |
|
April |
62.51 |
|
March |
49.51 |
|
February |
31.02 |
| 2002 |
January |
29.50 |
| 2001 |
December |
36.72 |
|
November |
38.77 |
|
October |
42.31 |
|
September |
43.91 |
|
August |
79.47 |
|
July |
110.05 |
|
June |
134.75 |
|
May |
207.64 |
|
April |
92.09 |
|
March |
57.08 |
|
February |
38.67 |
| 2001 |
January |
24.49 |
| 2000 |
December |
44.66 |
|
November |
38.64 |
|
October |
79.23 |
|
September |
53.41 |
|
August |
72.91 |
|
July |
71.59 |
|
June |
79.16 |
|
May |
89.04 |
|
April |
65.45 |
|
March |
29.21 |
|
February |
19.38 |
| 2000 |
January |
11.26 |
| 1999 |
December |
19.78 |
|
November |
23.74 |
|
October |
32.43 |
|
September |
64.81 |
|
August |
92.77 |
|
July |
126.07 |
|
June |
131.38 |
|
May |
142.01 |
|
April |
96.55 |
|
March |
46.31 |
|
February |
40.54 |
| 1999 |
January |
27.39 |
| 1998 |
December |
31.53 |
|
November |
32.42 |
|
October |
36.39 |
|
September |
56.61 |
|
August |
73.53 |
|
July |
95.91 |
|
June |
106.36 |
|
May |
98.72 |
|
April |
77.29 |
|
March |
38.90 |
|
February |
13.65 |
| 1998 |
January |
18.90 |
| 1997 |
December |
30.58 |
|
November |
20.55 |
|
October |
30.72 |
|
September |
41.88 |
|
August |
51.26 |
|
July |
76.24 |
|
June |
84.06 |
|
May |
140.89 |
|
April |
94.84 |
|
March |
41.08 |
|
February |
15.64 |
| 1997 |
January |
15.14 |
| 1996 |
December |
16.19 |
|
November |
23.75 |
|
October |
33.58 |
|
September |
29.81 |
|
August |
49.26 |
|
July |
55.74 |
|
June |
63.61 |
|
May |
79.72 |
|
April |
54.02 |
|
March |
34.74 |
|
February |
16.57 |
| 1996 |
January |
25.91 |
| 1995 |
December |
38.05 |
|
November |
36.12 |
|
October |
37.37 |
|
September |
38.50 |
|
August |
36.82 |
|
July |
51.84 |
|
June |
71.09 |
|
May |
80.00 |
|
April |
82.94 |
|
March |
62.12 |
|
February |
32.37 |
| 1995 |
January |
10.13 |
| 1994 |
December |
14.49 |
|
November |
16.64 |
|
October |
15.31 |
|
September |
27.45 |
|
August |
29.22 |
|
July |
34.60 |
|
June |
42.35 |
|
May |
49.42 |
|
April |
39.86 |
|
March |
28.33 |
|
February |
18.52 |
| 1994 |
January |
14.18 |
| 1993 |
December |
28.12 |
|
November |
13.86 |
|
October |
21.45 |
|
September |
20.42 |
|
August |
28.27 |
|
July |
36.50 |
|
June |
54.10 |
|
May |
69.37 |
|
April |
77.38 |
|
March |
32.72 |
|
February |
15.74 |
| 1993 |
January |
9.43 |
| 1992 |
December |
17.71 |
|
November |
13.92 |
|
October |
25.44 |
|
September |
18.37 |
|
August |
29.04 |
|
July |
41.52 |
|
June |
27.28 |
|
May |
61.31 |
|
April |
46.27 |
|
March |
22.61 |
|
February |
15.27 |
| 1992 |
January |
15.51 |
| 1991 |
December |
25.12 |
|
November |
32.84 |
|
October |
28.61 |
|
September |
26.55 |
|
August |
39.51 |
|
July |
56.03 |
|
June |
45.48 |
|
May |
63.64 |
|
April |
56.98 |
|
March |
21.93 |
|
February |
10.32 |
| 1991 |
January |
8.35 |
| 1990 |
December |
8.62 |
|
November |
11.98 |
|
October |
21.11 |
|
September |
22.62 |
|
August |
35.69 |
|
July |
56.04 |
|
June |
48.87 |
|
May |
37.73 |
|
April |
37.61 |
|
March |
15.19 |
|
February |
7.96 |
| 1990 |
January |
6.29 |
|