Do we have any way of seeing how many mappers there are per country?
OSMstats - Statistics of the free wiki world map shows (I think?) how many changes there were made per country (but without a legend for the colours?), but if you select “contributors per area”, basically there are only people mapping in Europe?
Just select “contributors” on OSMstats and look at the table below. The “contributors per area” should probably read “contributors per land area” as I believe it takes the number of contributors in a country and divided it by the land area (km²) of that country.