| Data not available | ≤ 250 | 251 – 800 | 801 – 1,000 | 1,001 – 2,000 | 2,001 – 4,500 | > 4,500 |
Source: Bureau of Educational and Cultural Affairs,
U.S. Department of State
Source: U.S. Department of State via Jerry Kammer, senior research fellow, Center for Immigration Studies