İşlem adeti olarak değil ancak parasal olarak bir bilgi buldum:
www.worldbank.org"International remittances are international transfers of small amounts of money, often initiated by migrant workers. The worldwide cash flows, taken together, are enormous. The World Bank estimates that remittances totaled $583 billion in 2014, of which $436 billion went to developing countries, involving some 247 million migrants."
Şu siteyi biraz kurcalarsan çıkabilir bir şeyler belki:
www.worldbank.org