icu4c/source/data/region/en_IO.txt

// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
// Generated using tools/cldr/cldr-to-icu/build-icu-data.xml
en_IO{
    %%Parent{"en_001"}
    Version{"38"}
}