这是由于1999年厄瓜多尔经济大萧条，大量的人口移居外地寻找生存机会。
This is because Ecuador's economy collapsed in 1999 and large Numbers of migrants sought opportunities elsewhere.
本处的政策旨在限制移居本港的人数，使所导致的人口增长维持在可接受的水平，并对输入外地劳工施行管制。
Policies are framed to limit to an acceptable level population growth through immigration, and to control the entry of foreign workers.
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