| | | | 221121 | Electric Bulk Power
Transmission and Control | Electric Power
Transmission, Control,
and Distribution 22112 | Electric Power
Generation, Transmission
and Distribution 2211 | Utilities 221 | Utilities 22 |
| | | | 221122 | Electric Power
Distribution | Electric Power
Transmission, Control,
and Distribution 22112 | Electric Power
Generation, Transmission
and Distribution 2211 | Utilities 221 | Utilities 22 |
| | | | 221210 | Natural Gas Distribution | Natural Gas Distribution 22121 | Natural Gas Distribution 2212 | Utilities 221 | Utilities 22 |
| | | | 221310 | Water Supply and
Irrigation Systems | Water Supply and
Irrigation Systems 22131 | Water, Sewage and Other
Systems 2213 | Utilities 221 | Utilities 22 |
| | | | 221320 | Sewage Treatment
Facilities | Sewage Treatment
Facilities 22132 | Water, Sewage and Other
Systems 2213 | Utilities 221 | Utilities 22 |
| | | | 221330 | Steam and
Air-Conditioning Supply | Steam and
Air-Conditioning Supply 22133 | Water, Sewage and Other
Systems 2213 | Utilities 221 | Utilities 22 |
| | | | 236115 | New Single-Family Housing
Construction (except
For-Sale Builders) | Residential Building
Construction 23611 | Residential Building
Construction 2361 | Construction of Buildings 236 | Construction 23 |
| | | | 236116 | New Multifamily Housing
Construction (except
For-Sale Builders) | Residential Building
Construction 23611 | Residential Building
Construction 2361 | Construction of Buildings 236 | Construction 23 |
| | | | 236117 | New Housing For-Sale
Builders | Residential Building
Construction 23611 | Residential Building
Construction 2361 | Construction of Buildings 236 | Construction 23 |
| | | | 236118 | Residential Remodelers | Residential Building
Construction 23611 | Residential Building
Construction 2361 | Construction of Buildings 236 | Construction 23 |
