| 2021 | 2020 | 2019 | 2018 | 2017 | 2016 |
营业毛利率 | 23.75% | 24.75% | 30.24% | 28.84% | 26.26% | 28.59% |
营业利润率 | 9.75% | 11.08% | 10.67% | 9.85% | 8.98% | 10.89% |
总资产报酬率 | 9.03% | 9.59% | 10.63% | 10.15% | 10.56% | 12.93% |
净资产收益率 | 7.75% | 8.31% | 8.94% | 8.46% | 8.89% | 10.59% |