| Year |
Average annual rainfall/4 years |
| 1990 |
52.96 |
| 1993 |
71.92 |
| 1996 |
51.47 |
| 1999 |
56.5 |
| 2002 |
51.58 |
| 2005 |
61.51 |
| 2008 |
50.12 |
| 2011 |
51.96 |
| 2014 |
44.85 |
| 2017 |
41.26 |
| 2020 |
56.09 |