msnに出ていたものだが数字は合っているので元ソースはIIE統計なのであろう。
米国留学生数というのは一つの指標であり、米国留学が全てと言うわけではないだろうが、大学レベル以上の高等教育を米国で学ぶ若い人というのはその国の将来を担う人材なのだろうし、「Japan」の数字は些かサビシイだろうか。

       #1. China

Total students: 304,040

Undergraduate students: 124,552
Graduate students: 120,331
Non-degree students: 16,043
Optional Practical Training students: 43,114

#2. India

Total students: 132,888

Undergraduate students: 16,521
Graduate students: 85,055
Non-degree students: 1,924
Optional Practical Training students: 29,388

#3. South Korea

Total students: 63,710

Undergraduate students: 34,651
Graduate students: 17,605
Non-degree students: 4,819
Optional Practical Training students: 6,635

#4. Saudi Arabia

Total students: 59,945

Undergraduate students: 30,861
Graduate students: 12,584
Non-degree students: 15,322
Optional Practical Training students: 1,178

#5. Canada

Total students: 27,240

Undergraduate students: 13,131
Graduate students: 10,605
Non-degree students: 821
Optional Practical Training students: 2,683

#6. Brazil

Total students: 23,675

Undergraduate students: 6,874
Graduate students: 4,110
Non-degree students: 11,581
Optional Practical Training students: 1,110

#7. Taiwan

Total students: 20,993

Undergraduate students: 6,069
Graduate students: 9,607
Non-degree students: 1,695
Optional Practical Training students: 3,622

#8. Japan

Total students: 19,064

Undergraduate students: 8,877
Graduate students: 3,290
Non-degree students: 5,612
Optional Practical Training students: 1,285

#9. Vietnam

Total students: 18,722

Undergraduate students: 12,449
Graduate students: 2,931
Non-degree students: 1,764
Optional Practical Training students: 1,578

#10. Mexico

Total students: 17,052

Undergraduate students: 8,210
Graduate students: 3,994
Non-degree students: 3,550
Optional Practical Training students: 1,298