[Pelham]

year old figure from CNN Business says:

“Mexicans sent home $26.1 billion from January to November 2017,”

https://money.cnn.com/2018/01/02/news/economy/mexico-remittances/index.html

[Beautiful_Gracious_Skies]

A better source:

https://howmuch.net/articles/outgoing-remittances-from-usa

Migrants combined send $138 Billion out of the USA

Mexico $28.1 Billion

Honduras, Guatemala, & El Salvador - $15 Billion

China 15 Billion