| 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 |
0.00 |
|
April |
0.00 |
|
March |
4.63 |
|
February |
32.05 |
| 2008 |
January |
40.92 |
| 2007 |
December |
49.30 |
|
November |
25.28 |
|
October |
30.35 |
|
September |
36.30 |
|
August |
49.92 |
|
July |
32.27 |
|
June |
32.40 |
|
May |
26.62 |
|
April |
19.89 |
|
March |
46.02 |
|
February |
34.73 |
| 2007 |
January |
54.06 |
| 2006 |
December |
49.82 |
|
November |
49.51 |
|
October |
53.88 |
|
September |
54.37 |
|
August |
67.65 |
|
July |
72.03 |
|
June |
53.31 |
|
May |
42.78 |
|
April |
22.29 |
|
March |
36.08 |
|
February |
46.03 |
| 2006 |
January |
48.73 |
| 2005 |
December |
62.32 |
|
November |
61.05 |
|
October |
61.25 |
|
September |
43.77 |
|
August |
52.08 |
|
July |
59.81 |
|
June |
36.73 |
|
May |
13.95 |
|
April |
4.39 |
|
March |
7.22 |
|
February |
17.01 |
| 2005 |
January |
39.74 |
| 2004 |
December |
39.01 |
|
November |
56.35 |
|
October |
47.87 |
|
September |
71.99 |
|
August |
54.83 |
|
July |
54.09 |
|
June |
35.16 |
|
May |
19.70 |
|
April |
17.23 |
|
March |
12.03 |
|
February |
17.16 |
| 2004 |
January |
22.95 |
| 2003 |
December |
44.08 |
|
November |
38.99 |
|
October |
51.15 |
|
September |
34.95 |
|
August |
21.70 |
|
July |
36.44 |
|
June |
24.68 |
|
May |
14.84 |
|
April |
18.38 |
|
March |
23.66 |
|
February |
23.66 |
| 2003 |
January |
40.41 |
| 2002 |
December |
44.98 |
|
November |
38.30 |
|
October |
29.22 |
|
September |
22.04 |
|
August |
24.76 |
|
July |
31.28 |
|
June |
20.23 |
|
May |
17.81 |
|
April |
13.18 |
|
March |
17.73 |
|
February |
18.79 |
| 2002 |
January |
20.30 |
| 2001 |
December |
18.43 |
|
November |
10.42 |
|
October |
11.22 |
|
September |
9.89 |
|
August |
7.20 |
|
July |
5.44 |
|
June |
2.76 |
|
May |
1.11 |
|
April |
1.40 |
|
March |
1.12 |
|
February |
1.32 |
| 2001 |
January |
1.38 |
| 2000 |
December |
6.19 |
|
November |
5.48 |
|
October |
3.31 |
|
September |
2.54 |
|
August |
3.97 |
|
July |
2.73 |
|
June |
3.40 |
|
May |
2.27 |
|
April |
1.10 |
|
March |
3.39 |
|
February |
5.67 |
| 2000 |
January |
2.01 |
| 1999 |
December |
3.64 |
|
November |
5.27 |
|
October |
3.38 |
|
September |
4.15 |
|
August |
4.79 |
|
July |
4.49 |
|
June |
7.86 |
|
May |
1.43 |
|
April |
1.54 |
|
March |
0.92 |
|
February |
1.23 |
| 1999 |
January |
2.26 |
| 1998 |
December |
1.49 |
|
November |
1.38 |
|
October |
3.71 |
|
September |
2.55 |
|
August |
3.07 |
|
July |
3.05 |
|
June |
0.53 |
|
May |
1.08 |
|
April |
1.98 |
|
March |
1.89 |
|
February |
5.89 |
| 1998 |
January |
2.54 |
| 1997 |
December |
4.26 |
|
November |
3.00 |
|
October |
3.43 |
|
September |
3.29 |
|
August |
3.73 |
|
July |
1.21 |
|
June |
0.31 |
|
May |
0.34 |
|
April |
4.07 |
|
March |
2.42 |
|
February |
1.04 |
| 1997 |
January |
0.72 |
| 1996 |
December |
0.83 |
|
November |
1.60 |
|
October |
0.59 |
|
September |
0.97 |
|
August |
2.88 |
|
July |
2.48 |
|
June |
1.18 |
|
May |
1.08 |
|
April |
1.01 |
|
March |
0.03 |
|
February |
0.15 |
| 1996 |
January |
0.84 |
| 1995 |
December |
0.67 |
|
November |
0.37 |
|
October |
0.57 |
|
September |
0.40 |
|
August |
1.10 |
|
July |
0.56 |
|
June |
2.02 |
|
May |
1.76 |
|
April |
1.24 |
|
March |
4.79 |
|
February |
1.13 |
| 1995 |
January |
0.11 |
| 1994 |
December |
1.10 |
|
November |
0.89 |
|
October |
1.13 |
|
September |
2.05 |
|
August |
1.13 |
|
July |
0.67 |
|
June |
0.37 |
|
May |
0.01 |
|
April |
0.20 |
|
March |
0.25 |
|
February |
0.04 |
| 1994 |
January |
0.07 |
| 1993 |
December |
2.58 |
|
November |
0.40 |
|
October |
0.23 |
|
September |
0.57 |
|
August |
0.66 |
|
July |
0.07 |
|
June |
0.03 |
|
May |
0.21 |
|
April |
0.22 |
|
March |
0.00 |
|
February |
0.03 |
| 1993 |
January |
1.20 |
| 1992 |
December |
0.10 |
|
November |
1.09 |
|
October |
0.93 |
|
September |
0.94 |
|
August |
0.19 |
|
July |
0.40 |
|
June |
0.06 |
|
May |
0.15 |
|
April |
0.14 |
|
March |
2.01 |
|
February |
0.37 |
| 1992 |
January |
0.01 |
| 1991 |
December |
0.00 |
|
November |
0.69 |
|
October |
0.08 |
|
September |
0.03 |
|
August |
0.21 |
|
July |
0.03 |
|
June |
0.00 |
|
May |
0.02 |
|
April |
0.68 |
|
March |
1.39 |
|
February |
3.52 |
| 1991 |
January |
3.04 |
| 1990 |
December |
0.00 |
|
November |
0.01 |
|
October |
0.24 |
|
September |
0.01 |
|
August |
0.23 |
|
July |
0.12 |
|
June |
0.06 |
|
May |
0.02 |
|
April |
0.01 |
|
March |
0.01 |
|
February |
0.00 |
| 1990 |
January |
0.00 |
| 1989 |
December |
0.01 |
|
November |
0.07 |
|
October |
0.08 |
|
September |
0.00 |
|
August |
0.00 |
|
July |
0.47 |
|
June |
0.00 |
|
May |
0.06 |
|
April |
0.07 |
|
March |
0.26 |
|
February |
0.13 |
| 1989 |
January |
0.00 |
| 1988 |
December |
0.12 |
|
November |
0.01 |
|
October |
0.03 |
|
September |
0.06 |
|
August |
0.10 |
|
July |
0.32 |
|
June |
0.17 |
|
May |
0.02 |
|
April |
0.07 |
|
March |
0.38 |
|
February |
0.00 |
| 1988 |
January |
0.00 |
| 1987 |
December |
0.00 |
|
November |
0.00 |
|
October |
0.25 |
|
September |
0.00 |
|
August |
0.00 |
|
July |
0.00 |
|
June |
0.09 |
|
May |
0.25 |
|
April |
0.00 |
|
March |
0.18 |
|
February |
0.09 |
| 1987 |
January |
0.19 |
| 1986 |
December |
0.28 |
|
November |
0.00 |
|
October |
0.02 |
|
September |
0.00 |
|
August |
0.27 |
|
July |
0.78 |
|
June |
0.13 |
|
May |
0.17 |
|
April |
0.00 |
|
March |
0.12 |
|
February |
0.21 |
| 1986 |
January |
0.00 |
| 1985 |
December |
0.48 |
|
November |
0.62 |
|
October |
0.20 |
|
September |
0.11 |
|
August |
0.07 |
|
July |
0.55 |
|
June |
0.19 |
|
May |
0.02 |
|
April |
0.16 |
|
March |
0.05 |
|
February |
0.04 |
| 1985 |
January |
0.00 |
| 1984 |
December |
0.00 |
|
November |
0.26 |
|
October |
0.19 |
|
September |
0.00 |
|
August |
0.02 |
|
July |
0.00 |
|
June |
0.14 |
|
May |
0.09 |
|
April |
0.04 |
|
March |
0.09 |
|
February |
0.05 |
| 1984 |
January |
0.74 |
| 1983 |
December |
0.23 |
|
November |
0.19 |
|
October |
0.11 |
|
September |
0.00 |
|
August |
0.00 |
|
July |
0.00 |
|
June |
0.00 |
|
May |
0.00 |
|
April |
0.00 |
|
March |
0.00 |
|
February |
0.00 |
| 1983 |
January |
0.11 |
| 1982 |
December |
0.00 |
|
November |
0.00 |
|
October |
0.00 |
|
September |
0.00 |
|
August |
0.00 |
|
July |
0.04 |
|
June |
0.04 |
|
May |
0.03 |
|
April |
0.00 |
|
March |
0.00 |
|
February |
0.00 |
| 1982 |
January |
0.00 |
|