The much-criticized practice is slowing dwindling under the constant glare of publicity, but estimates put the number of annual workers at from 500,000 to 1 million.

You have reached a premium content area of TOL. To read this entire article please login if you are already a TOL subscriber.

Not a subscriber?

Subscribe today for access to:
Full access to the website, including premium articles videos, country reports and searchable archives (containing over 25,000 articles).

You can subscribe here to gain access to the entire website.