| Category | Large Sites | Small Sites |
| Combined Data (A.D. 920–1120) | ||
| Known Imports | 2,226 | 380 |
| Local Materials | 4,022 | 10,046 |
| Total | 6,248 | 10,426 |
| Percent Imported | 35.63 | 3.64 |
| A.D. 920–1040 | ||
| Known Imports | 124 | 260 |
| Local Materials | 1,263 | 8,508 |
| Total | 1,387 | 8,768 |
| Percent Imported | 8.94 | 2.97 |
| A.D. 1040–1120 | ||
| Known Imports | 2,102 | 120 |
| Local Materials | 3,759 | 1,538 |
| Total | 5,861 | 1,658 |
| Percent Imported | 35.86 | 7.24 |