WWW
I'm a cynic and I like your glib tone. Tell me, what do you think will end up as having caused the greater damage to the jobs market in the west:
a. The west/east shift to which you allude, coupled with the cliched global credit thingy and high oil price (due in part, no doubt to the west/east stuff and the east's demand for oil)
or
b. The September 11 terrorist attacks.
Consequently, in order to stick loosely to the original poster's question, what will end up as having had the greatest effect on the number of trainees?