| Year | Appeared | Passed | % |
| April – 2022 | 162 | 58 | 35.80% |
| April – 2021 | 125 | 63 | 50.40% |
| April – 2020 | 271 | 271 | 100% |
| April – 2019 | 290 | 178 | 61.38% |
| April – 2018 | 261 | 129 | 49.4% |
| April – 2017 | 297 | 208 | 70.03% |
| April – 2016 | 298 | 208 | 70% |
| April – 2015 | 317 | 215 | 68% |
| April – 2014 | 400 | 211 | 53% |
| April – 2013 | 453 | 263 | 58% |
| April – 2012 | 313 | 130 | 42% |
| April – 2011 | 583 | 387 | 66.38% |
| April – 2010 | 576 | 462 | 80.20% |
| April – 2009 | 732 | 642 | 87.70% |
| April – 2008 | 794 | 681 | 85.76% |
| April – 2007 | 368 | 236 | 64.13% |
| April – 2006 | 336 | 187 | 55.65% |
| April – 2005 | 256 | 124 | 47.43% |
| April – 2004 | 249 | 89 | 35.74% |
| April – 2003 | 264 | 36 | 13.63% |
| April – 2002 | 157 | 52 | 33.12% |
