That is a significant number. I didn't realize there were so many people from Indonesia working abroad. Is this unusual for a country? It seems like more than an average country would have working abroad. I think you are right and perhaps this is the reason for bitcoin's recent popularity in Indonesia.
considering the population plus the fact that indonesia is a third world country, it is not really that surprising for our people to search for an outside jobs for more income. the average monthly wages in Indonesia is very low. now I don't know about the whole country, but on my city 70% of the jobs only pays $200-$300 a month (the minimum pay is about $160, in case anyone wondering).
Yeah, plus Indonesia has the 4th largest population of any country in the world. The 4.5m is only about 2% of the population. Just FYI.