Jamaica supplies 28.9% of U.S. imports of Yams (Dioscorea spp.), across 21 countries (year to date through September 2026).
HHI 1,802 of 10,000 · HHI above 1,800. The sum of each country’s squared percentage share; one country with everything scores 10,000.
21 countries supplying this product to the U.S.
| Rank# | Country | Value | Share | YoY | Duty |
|---|---|---|---|---|---|
| 1 | Jamaica | $2.0M | 37.8% | -55.2% | 0.0% |
| 2 | Costa Rica | $1.3M | 23.6% | +7.9% | 11.3% |
| 3 | Ghana | $1.1M | 20.3% | -36.5% | 0.1% |
| 4 | Brazil | $488K | 9.0% | -29.0% | 43.9% |
| 5 | Japan | $220K | 4.1% | -26.3% | 12.5% |
| 6 | China | $165K | 3.1% | -8.7% | 43.9% |
| 7 | Colombia | $51K | 1.0% | +3.6% | 12.5% |
| 8 | Dominican Republic | $30K | 0.6% | -29.5% | 12.5% |
| 9 | Philippines | $25K | 0.5% | -27.7% | 18.5% |
| 10 | India | $9K | 0.2% | -69.9% | 16.0% |
| 11 | Vietnam | $3K | 0.1% | -20.1% | 18.5% |
| 12 | Mexico | $3K | 0.1% | -44.6% | 0.0% |
| 13 | Tonga | $3K | 0.1% | +116.4% | 6.0% |
| 14 | Hong Kong | -- | 0.0% | -- | -- |
| 15 | Taiwan | -- | 0.0% | -- | -- |
| 16 | Panama | -- | 0.0% | -95.3% | -- |
| 17 | Nicaragua | -- | 0.0% | +8.6% | -- |
| 18 | Nigeria | -- | 0.0% | +60.9% | -- |
| 19 | Uganda | -- | 0.0% | +75.0% | -- |
| 20 | Dominica | -- | 0.0% | -30.6% | -- |
| 21 | Kenya | -- | 0.0% | -- | -- |
Duty is the duty Census calculated on this month's imports for consumption from each country, as a share of their customs value. It applies the rates in force, additional duties such as Section 301, 232 and IEEPA included and claimed trade-agreement preferences netted out, so it is an observed rate rather than a statutory one. It is an estimate, not duty collected: antidumping and countervailing duties, fees and later refunds are not in it. YoY compares year-to-date value with the same months last year.