| JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | TOTAL | |
| 1985 | 5.00 | 5.00 | 45.50 | 53.05 | 38.75 | 47.55 | 40.30 | 61.25 | 22.00 | 50.05 | 53.65 | 110.50 | 532.60 |
| 1986 | 17.50 | 2.50 | 7.50 | 52.50 | 100.75 | 22.75 | 76.50 | 29.25 | 74.75 | 93.50 | 17.00 | 81.75 | 576.25 |
| 1987 | 68.00 | 64.00 | 15.50 | 20.00 | 123.75 | 23.50 | 47.50 | 39.50 | 42.50 | 42.00 | 43.25 | 142.50 | 672.00 |
| 1988 | 42.00 | 6.00 | 12.75 | 5.50 | 110.00 | 59.50 | 48.50 | 59.00 | 53.50 | 24.50 | 103.00 | 76.50 | 600.75 |
| 1989 | 42.50 | 36.50 | 79.00 | 105.50 | 58.50 | 63.50 | 76.75 | 52.50 | 33.00 | 68.00 | 27.50 | 23.50 | 666.75 |
| 1990 | 2.50 | 128.50 | 17.00 | 45.00 | 21.00 | 30.00 | 55.50 | 52.00 | 42.50 | 75.50 | 20.00 | 17.50 | 507.00 |
| 1991 | 92.00 | 4.00 | 21.50 | 4.50 | 8.50 | 108.50 | 20.00 | 56.00 | 66.75 | 23.00 | 38.50 | 80.00 | 523.25 |
| 1992 | 19.00 | 39.50 | 43.50 | 60.00 | 66.75 | 48.50 | 29.00 | 70.25 | 84.50 | 116.75 | 74.25 | 101.25 | 753.25 |
| 1993 | 79.25 | 69.50 | 17.00 | 11.75 | 9.50 | 59.75 | 50.25 | 47.75 | 107.75 | 71.50 | 67.25 | 110.25 | 701.50 |
| 1994 | 37.00 | 105.75 | 20.00 | 29.50 | 35.25 | 21.50 | 21.75 | 21.25 | 39.60 | 53.00 | 46.00 | 29.50 | 460.10 |
| 1995 | 51.00 | 17.50 | 41.50 | 109.75 | 29.30 | 101.75 | 69.75 | 59.00 | 56.00 | 92.75 | 94.50 | 60.75 | 783.55 |
| 1996 | 31.25 | 48.00 | 28.50 | 53.75 | 14.50 | 63.75 | 93.25 | 66.75 | 88.75 | 15.75 | 30.00 | 16.50 | 550.75 |
| 1997 | 34.75 | 7.25 | 2.75 | 10.25 | 92.50 | 24.50 | 26.00 | 50.25 | 70.75 | 79.25 | 60.50 | 3.75 | 462.50 |
| 1998 | 29.25 | 50.00 | 2.00 | 60.25 | 26.25 | 82.50 | 39.00 | 20.50 | 41.75 | 71.00 | 68.00 | 33.50 | 524.00 |
| 1999 | 28.00 | 43.00 | 66.75 | 13.00 | 75.75 | 46.50 | 27.25 | 83.75 | 32.50 | 40.00 | 29.50 | 60.00 | 546.00 |
| 2000 | 26.00 | 14.25 | 6.00 | 50.25 | 82.25 | 39.25 | 72.00 | 41.25 | 84.25 | 147.75 | 36.50 | 18.50 | 618.25 |
| 2001 | 10.50 | 16.00 | 105.00 | 197.00 | 23.75 | 83.50 | 29.25 | 79.75 | 53.00 | 81.75 | 86.50 | 43.00 | 809.00 |
| 2002 | 18.75 | 55.50 | 8.00 | 30.25 | 70.00 | 53.50 | 52.25 | 34.25 | 52.75 | 36.75 | 39.50 | 56.50 | 508.00 |
| 2003 | 10.75 | 28.75 | 31.00 | 74.25 | 20.00 | 30.50 | 105.00 | 90.00 | 40.50 | 103.00 | 27.00 | 25.75 | 586.50 |
| 2004 | 85.75 | 31.25 | 24.00 | 55.00 | 40.75 | 38.50 | 68.50 | 76.25 | 69.75 | 42.50 | 86.00 | 48.00 | 666.25 |
| 2005 | 164.50 | 124.25 | 4.75 | 18.75 | 6.25 | 76.75 | 69.00 | 69.75 | 77.50 | 56.50 | 42.00 | 27.25 | 737.25 |
| 2006 | 31.50 | 21.00 | 14.00 | 44.50 | 41.25 | 19.50 | 37.50 | 34.50 | 44.25 | 12.25 | 14.50 | 9.75 | 324.50 |
| 2007 | 44.75 | 27.25 | 16.50 | 31.50 | 54.50 | 100.25 | 139.75 | 38.50 | 46.25 | 36.25 | 104.50 | 78.50 | 718.50 |
| 2008 | 16.50 | 26.00 | 29.25 | 11.00 | 41.00 | 35.50 | 58.00 | 56.50 | 37.50 | 15.00 | 54.25 | 80.50 | 461.00 |
| 2009 | 2.00 | 1.50 | 37.25 | 47.50 | 17.00 | 42.00 | 75.75 | 94.50 | 124.00 | 77.50 | 149.00 | 64.00 | 732.50 |
| 2010 | 8.50 | 26.50 | 83.00 | 47.00 | 42.75 | 80.25 | 50.50 | 339.00 | |||||
| Avg. | 41.17 | 40.47 | 27.47 | 47.78 | 49.62 | 53.39 | 56.36 | 53.78 | 56.76 | 60.35 | 52.65 | 55.65 | 595.45 |
Last updated 1st August, 2010