In 2007, foreign citizens accounted for 16,022 of the Ph.D.s awarded in science and engineering in the U.S., or 46% of the total, according to the Oak Ridge data. In contrast, the class of 1997 had 12,966 foreigners, or 30% of the total.
Graduates of Ph.D. programs in the physical sciences and computer science are more likely to remain in the U.S. than those in other fields, Mr. Finn said. Those programs are popular with Chinese and Indian students, who are more likely to remain in the U.S. after completing studies than those from Taiwan, South Korea and Western Europe. Among 2002 graduates, 92% of the Chinese and 81% of the Indians were in the U.S. after five years; in contrast, 41% of South Koreans and 52% of Germans were.
The figure shown in the above article seems to be referring to data of 2002 and shows that the number of Indians receiving science and engineering doctorates in 2002 was 615.The trend in the interactive graph indicates that 91% stayed back in 2003 while 81% stayed back in 2007, indicating a 10% drop in 4 years. Couple this with the fact that the number of Indians receiving doctorates have been increasing significantly in the last few years. The number of Indians receiving doctorates (in all branches put together) in 2002 was 838. The number of Indians receiving doctorates in USA for the year 2008 has now increased to 2316. Thus, the numbers returning back to India have increased significantly in the last few years. This is partly because the salaries in India for doctorates in certain organizations now are about $40,000, which is higher than that of US if one takes into account the cost of living and purchasing power.