
Percentage of global currency reserves held in particular currencies
Source: Wikimedia Commons/Gorgo

A map showing members of the Eurozone
Source: Wikimedia Commons/Kolja21
Comments: Original members are in dark blue, newer members in light blue, and EU members with national currencies in brown

Symbols for major regional currency units
Source: Wikimedia Commons/ http://www.radicalcartography.net/ User:16@r