The data used in this sonification system was collected from https://ourworldindata.org/democracy and it relates to the evolution of electoral democracies in the world from 1790 to 2020. The raw data is provided by year and by country.
In this project, the data was organized in a way that it represents all countries in each decade (with a formula on excel that sums the number o electoral democracies in all countries for each 10 years).
Sonification was done using TwoTone: https://twotone.io/ and an excel file.