A number of countries do not have sex-disaggregated wage data. How do you estimate sex-disaggregated GNI per capita for these countries?

The global average female to male wage ratio across all sectors is 0.8 in 2014 as well as in 2015. This global average is what we have used to make estimate for countries with missing sex-disaggregated wage data. This average coincides with averages for some regions but not others where the number of countries with data is limited. We recognize the limitation in assuming that the global average applies to all countries with missing wage data. The International Labour
Organization (ILO) is currently working to improve availability of sex-disaggregated wage statistics.