> Immigration and the North
> American Economy
>
> * Immigration to the United States has surged over the past decade,
> with most of the increase outside legal channels. Immigrants
> boosted US labor force growth by about half a percentage point per
> year over the past decade.
Population well over 300 million, so maybe 100 million working. Half a million working immigrants a year?
-- Sandy Harris, Nanjing, China