| Year | May | June | |||
| 10 | 20 | 30 | 10 | 20 | |
| 1989 | 6 | 18 | 44 | 83 | 97 |
| 1990 | 2 | 4 | 14 | 41 | 74 |
| 1991 | 8 | 16 | 43 | 87 | 100 |
| 1992 | 5 | 20 | 56 | 88 | 98 |
| 1993 | 0 | 6 | 35 | 58 | 85 |
| 1994 | 1 | 18 | 53 | 89 | 99 |
| 1995 | 0 | 2 | 7 | 43 | 88 |
| 1996 | 0 | 1 | 10 | 29 | 57 |
| 1997 | 1 | 10 | 26 | 56 | 86 |
| 1998 | 1 | 19 | 53 | 78 | 86 |
| Year | June | July | ||||
| 10 | 20 | 30 | 10 | 20 | 30 | |
| 1989 | 2 | 13 | 32 | 57 | 82 | 99 |
| 1990 | 1 | 6 | 16 | 38 | 58 | 78 |
| 1991 | 5 | 20 | 55 | 73 | 89 | 100 |
| 1992 | 2 | 6 | 29 | 57 | 65 | 80 |
| 1993 | 0 | 5 | 18 | 36 | 56 | 72 |
| 1994 | 2 | 13 | 36 | 64 | 84 | 94 |
| 1995 | 1 | 4 | 10 | 32 | 61 | 86 |
| 1996 | 0 | 2 | 9 | 26 | 46 | 76 |
| 1997 | 0 | 3 | 15 | 42 | 72 | 85 |
| 1998 | 2 | 3 | 19 | 42 | 79 | 92 |
| Year | July | August | September | ||||
| 20 | 30 | 10 | 20 | 30 | 10 | 20 | |
| 1989 | 6 | 21 | 47 | 62 | 72 | 79 | 90 |
| 1990 | 2 | 8 | 21 | 43 | 55 | 76 | 91 |
| 1991 | 23 | 33 | 45 | 61 | 70 | 84 | 93 |
| 1992 | 4 | 13 | 29 | 48 | 66 | 79 | 89 |
| 1993 | 4 | 9 | 20 | 30 | 51 | 68 | 79 |
| 1994 | 9 | 18 | 49 | 63 | 76 | 87 | 94 |
| 1995 | 4 | 8 | 18 | 32 | 59 | 82 | 93 |
| 1996 | 3 | 16 | 22 | 31 | 51 | 73 | 91 |
| 1997 | 3 | 10 | 24 | 38 | 55 | 79 | 93 |
| 1998 | 7 | 18 | 30 | 53 | 70 | 90 | 94 |
| Year | May | June | July | ||||
| 10 | 20 | 30 | 10 | 20 | 30 | 10 | |
| 1989 | 0 | 6 | 28 | 63 | 70 | 78 | 92 |
| 1990 | 0 | 1 | 8 | 25 | 52 | 67 | 80 |
| 1991 | 0 | 9 | 33 | 68 | 85 | 90 | 96 |
| 1992 | 2 | 10 | 32 | 66 | 86 | 92 | 95 |
| 1993 | 0 | 2 | 34 | 56 | 74 | 80 | 84 |
| 1994 | 0 | 10 | 43 | 80 | 92 | 96 | 99 |
| 1995 | 0 | 1 | 5 | 34 | 72 | 87 | 91 |
| 1996 | 0 | 1 | 10 | 35 | 54 | 77 | 92 |
| 1997 | 0 | 8 | 25 | 35 | 56 | 81 | 89 |
| 1998 | 0 | 16 | 41 | 59 | 60 | 73 | 89 |
| Illinois Agricultural Statistics Service Annual Summary - 1999 |
Page 53 |
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