There is currently no such estimate, but to give us an idea about the size of the market, it is reported that the US Federal Government spent around $560 million on translation & interpretation work in 2017. Since it covered all language pairs, we use the statistics collected from the US 2016 Census to put it in perspective for English – Vietnamese alone. According to the survey, the number of Vietnamese speakers accounts for 2.5% of all people who speak languages other than English at home, who are older than 5. A rough estimate gives us 15.2 million a year. But the market also includes state governments, independent law firms, private hospitals, school districts, private insurance companies, and individuals, just to name a few. In our opinion, the total size of this market could land anywhere between 50 to 100 million a year.