年度 | 施工企业数 | 总合同额(万) | CR4 | CR8 | CR4判别竞争类型 |
2014 | 15 | 17,871 | 68.6 | 91.7 | 寡占Ⅲ型 |
2015 | 21 | 87,107 | 86.3 | 93.8 | 寡占Ⅰ型 |
2016 | 45 | 108,449 | 61.6 | 74.4 | 寡占Ⅲ型 |
2017 | 62 | 118,725 | 48.6 | 60.0 | 寡占Ⅳ型 |
2018 | 102 | 271,967 | 51.0 | 61.5 | 寡占Ⅲ型 |
2019 | 98 | 203,134 | 36.0 | 49.8 | 寡占Ⅳ型 |
2020 | 74 | 185,632 | 46.0 | 69.6 | 寡占Ⅳ型 |
2011~2020 | 313 | 1,039,410 | 43.9 | 54.2 | 寡占Ⅳ型 |