| 2015 | 2016 | 2017 | 2018 | 2019 | 年均 |
增值税额(元) | 6654381 | 6373126 | 6774275 | 6314352 | 11504306 | 7524088 |
营业收入额(元) | 140239062 | 135311725 | 147377239 | 131280116 | 213429665 | 153527561 |
增值税负税率 | 4.75% | 4.71% | 4.60% | 4.81% | 5.39% | 4.85% |
行业税负差异 | 0.90% | 0.86% | 0.75% | 0.96% | 1.54% | 1.00% |