I have been looking on this site for the "numbers" SO in perusing the internet & starting with Wikipedia, these are the "beginning results" in my search that I'd like to share with all:

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Projected immigration 2000, 2004 and 2010:

Top Ten Foreign Countries - Foreign Born Population Among U.S. Immigrants
Country #/year.........2000.........2004...........2010..... .......2010.............%
Canada...................24,200.....,.678,000..... .774,800.......920,000......2.3%
China......................50,900....1,391,000...1 ,594,600.....1,900,000.....4.7%
Cuba.......................14,800.......952,000... 1,011,200....1,100,000......2.7%
Dominican Republic..24,900.......692,000......791,600....... 941,000......2.3%
El Salvador..............33,500.......765,000......89 9,000....1,100,000......2.7%
India.......................59,300....1,007,000... 1,244,200.....1,610,000......4.0%
Korea......................17,900.......701,000... ..772,600........880,000......2.2%
Mexico...................175,900....7,841,000...8, 544,600.....9,600,000.....23.7%
Philippines................47,800....1,222,000...1 ,413,200....1,700,000......4.2%
Ireland.....................33,700......863,000... ...997,800....1,200,000......3.0%
Total Pop. Top 1......498,900..16,112,000..18,747,600..21,741,000 ....53.7%
Total Foreign Born...940,000..31,100,000..34,860,000..40,500,000 .....100%
Historical Data from 2000 U.S. Census and 2004 Yearbook of Immigrant Statistics

The average number of legal immigrants/year immigrating from 2000 to 2004
The number of foreign born immigrants in the U.S. from 2000 census
Year 2004 foreign born. Year 2000 foreign born plus 2000 to 2004 immigration
Year 2010 foreign born projected assuming average number per year is maintained
Percent of foreign born from this country
Legal immigration numbers as reported to immigration authorities only
Estimated illegal immigration numbers.[31]

http://en.wikipedia.org/wiki/Immigratio ... immigratio