| Production (tonnes) | Country | Continent | % Correct |
|---|---|---|---|
| 1,000 | United States | North America | 100%
|
| 3,400 | China | Asia | 98%
|
| 6,400 | Mexico | North America | 98%
|
| 1,200 | Australia | Oceania | 94%
|
| 1,200 | Russia | Europe | 93%
|
| 1,400 | Chile | South America | 91%
|
| 3,100 | Peru | South America | 91%
|
| 1,200 | Bolivia | South America | 83%
|
| 1,300 | Poland | Europe | 65%
|
| 990 | Kazakhstan | Asia | 63%
|