| 年度 | 事项数 | |||||||||
| 1 | 2 | 3 | 4 | 5 | ||||||
| 频数 | 占比 | 频数 | 占比 | 频数 | 占比 | 频数 | 占比 | 频数 | 占比 | |
| 2017 | 18 | 19.57% | 55 | 59.78% | 18 | 19.57% | 0 | 0.00% | 1 | 1.09% |
| 2018 | 22 | 23.91% | 56 | 60.87% | 9 | 9.78% | 5 | 5.43% | 0 | 0.00% |
| 2019 | 21 | 22.83% | 58 | 63.04% | 9 | 9.78% | 4 | 4.35% | 0 | 0.00% |
| 合计 | 61 | 22.10% | 169 | 61.23% | 36 | 13.04% | 9 | 3.26% | 1 | 0.36% |