| Rango | País | Producción en Toneladas | ||
|---|---|---|---|---|
| 2008 | 2009 | 2010 | ||
| 1 | Perú | 3,800 | 3,000 | 4,000 |
| 2 | México | 3000 | 2,500 | 3,500 |
| 3 | China | 500 | 1,670 | 3,000 |
| 4 | Australia | 800 | 1,000 | 1,700 |
| 5 | Chile | 1,100 | 1,000 | 1,500 |
| 6 | Rusia | 2,000 | 900 | 1,400 |
| 7 | Bolivia | 650 | 800 | 1,360 |
| 8 | Estados Unidos | 300 | 800 | 1,280 |
| 9 | Polonia | 300 | 750 | 1,200 |
| 10 | Canada | 299 | 230 | 700 |