| Industry Code | Industry | 2016 | 2017 | 2018 |
| 0002 | Public utilities | 14 | 596 | 615 |
| 0006 | Business | 1 | 173 | 170 |
| 0005 | Industrial | 47 | 2329 | 2393 |
| 0003 | Real estate | 6 | 186 | 187 |
| 0004 | Comprehensive | 0 | 90 | 87 |
| 0001 | Financial | 22 | 87 | 101 |
| Total firms | 90 | 3461 | 3553 | |