| 变量 | lnproperty (5) | lnproperty (6) | lnproperty (7) | 
| 东部 | 中部 | 西部 | |
| index | 0.0051* | 0.0122* | 0.0093** | 
| (0.0026) | (0.0067) | (0.0045) | |
| Constant | −4.1268*** | −6.0623*** | −5.0901*** | 
| (1.0509) | (2.2512) | (1.5150) | |
| Observations | 1333 | 1027 | 1541 |