| Year |
Month |
Pounds (x1000) |
| 2008 |
December |
0.00 |
|
November |
0.00 |
|
October |
0.00 |
|
September |
0.00 |
|
August |
0.00 |
|
July |
0.00 |
|
June |
0.00 |
|
May |
37.11 |
|
April |
78.75 |
|
March |
47.64 |
|
February |
27.20 |
| 2008 |
January |
19.32 |
| 2007 |
December |
22.00 |
|
November |
63.47 |
|
October |
96.48 |
|
September |
61.14 |
|
August |
71.88 |
|
July |
72.98 |
|
June |
88.92 |
|
May |
103.63 |
|
April |
55.90 |
|
March |
52.59 |
|
February |
31.70 |
| 2007 |
January |
27.20 |
| 2006 |
December |
59.60 |
|
November |
99.07 |
|
October |
120.56 |
|
September |
122.80 |
|
August |
90.51 |
|
July |
64.16 |
|
June |
90.24 |
|
May |
117.87 |
|
April |
86.06 |
|
March |
49.29 |
|
February |
25.80 |
| 2006 |
January |
20.18 |
| 2005 |
December |
29.81 |
|
November |
56.68 |
|
October |
72.17 |
|
September |
90.34 |
|
August |
112.03 |
|
July |
109.10 |
|
June |
141.53 |
|
May |
139.27 |
|
April |
95.27 |
|
March |
46.92 |
|
February |
51.03 |
| 2005 |
January |
25.37 |
| 2004 |
December |
26.31 |
|
November |
35.20 |
|
October |
59.82 |
|
September |
75.73 |
|
August |
98.07 |
|
July |
103.74 |
|
June |
119.36 |
|
May |
92.53 |
|
April |
78.86 |
|
March |
90.03 |
|
February |
76.44 |
| 2004 |
January |
43.95 |
| 2003 |
December |
63.40 |
|
November |
76.97 |
|
October |
73.52 |
|
September |
68.60 |
|
August |
80.60 |
|
July |
137.97 |
|
June |
156.58 |
|
May |
170.55 |
|
April |
73.50 |
|
March |
38.83 |
|
February |
12.76 |
| 2003 |
January |
6.51 |
| 2002 |
December |
15.59 |
|
November |
29.62 |
|
October |
45.05 |
|
September |
61.62 |
|
August |
107.12 |
|
July |
174.11 |
|
June |
122.42 |
|
May |
93.88 |
|
April |
60.35 |
|
March |
61.31 |
|
February |
66.15 |
| 2002 |
January |
38.45 |
| 2001 |
December |
43.17 |
|
November |
106.99 |
|
October |
114.87 |
|
September |
154.87 |
|
August |
214.91 |
|
July |
236.23 |
|
June |
155.28 |
|
May |
75.74 |
|
April |
29.57 |
|
March |
21.85 |
|
February |
17.51 |
| 2001 |
January |
21.68 |
| 2000 |
December |
45.53 |
|
November |
84.46 |
|
October |
179.35 |
|
September |
179.46 |
|
August |
121.58 |
|
July |
128.92 |
|
June |
61.17 |
|
May |
41.73 |
|
April |
24.12 |
|
March |
55.86 |
|
February |
44.69 |
| 2000 |
January |
41.85 |
| 1999 |
December |
36.92 |
|
November |
62.31 |
|
October |
101.44 |
|
September |
102.88 |
|
August |
202.63 |
|
July |
158.01 |
|
June |
90.81 |
|
May |
50.40 |
|
April |
38.39 |
|
March |
55.02 |
|
February |
53.32 |
| 1999 |
January |
56.74 |
| 1998 |
December |
62.19 |
|
November |
78.67 |
|
October |
97.96 |
|
September |
129.33 |
|
August |
128.19 |
|
July |
131.42 |
|
June |
58.20 |
|
May |
39.78 |
|
April |
39.03 |
|
March |
42.29 |
|
February |
66.25 |
| 1998 |
January |
63.08 |
| 1997 |
December |
76.57 |
|
November |
117.72 |
|
October |
173.86 |
|
September |
146.75 |
|
August |
207.32 |
|
July |
261.30 |
|
June |
200.03 |
|
May |
109.87 |
|
April |
53.83 |
|
March |
36.96 |
|
February |
33.92 |
| 1997 |
January |
28.79 |
| 1996 |
December |
35.26 |
|
November |
87.25 |
|
October |
119.93 |
|
September |
107.60 |
|
August |
172.89 |
|
July |
179.27 |
|
June |
118.13 |
|
May |
98.57 |
|
April |
94.07 |
|
March |
119.79 |
|
February |
111.95 |
| 1996 |
January |
122.06 |
| 1995 |
December |
105.83 |
|
November |
128.45 |
|
October |
147.34 |
|
September |
105.98 |
|
August |
162.73 |
|
July |
211.05 |
|
June |
154.21 |
|
May |
111.15 |
|
April |
67.34 |
|
March |
34.65 |
|
February |
14.66 |
| 1995 |
January |
11.96 |
| 1994 |
December |
17.25 |
|
November |
24.37 |
|
October |
111.78 |
|
September |
164.42 |
|
August |
203.78 |
|
July |
178.11 |
|
June |
113.47 |
|
May |
70.66 |
|
April |
71.18 |
|
March |
64.33 |
|
February |
70.42 |
| 1994 |
January |
66.74 |
| 1993 |
December |
91.13 |
|
November |
108.67 |
|
October |
120.51 |
|
September |
174.96 |
|
August |
156.68 |
|
July |
141.00 |
|
June |
106.37 |
|
May |
38.56 |
|
April |
29.95 |
|
March |
23.81 |
|
February |
20.55 |
| 1993 |
January |
16.84 |
| 1992 |
December |
22.63 |
|
November |
36.69 |
|
October |
72.33 |
|
September |
65.09 |
|
August |
109.99 |
|
July |
115.71 |
|
June |
96.54 |
|
May |
62.69 |
|
April |
51.82 |
|
March |
72.31 |
|
February |
61.24 |
| 1992 |
January |
43.39 |
| 1991 |
December |
58.74 |
|
November |
123.92 |
|
October |
132.40 |
|
September |
131.11 |
|
August |
140.13 |
|
July |
142.93 |
|
June |
131.74 |
|
May |
118.53 |
|
April |
87.90 |
|
March |
41.86 |
|
February |
35.90 |
| 1991 |
January |
34.05 |
| 1990 |
December |
39.16 |
|
November |
57.15 |
|
October |
117.92 |
|
September |
147.18 |
|
August |
172.88 |
|
July |
155.17 |
|
June |
88.67 |
|
May |
100.93 |
|
April |
97.91 |
|
March |
64.03 |
|
February |
40.63 |
| 1990 |
January |
57.63 |
|