[OC] Diese europäischen Städte geben über 50 % ihres Einkommens für Wohnen und Essen aus

This is Part 3 of the USI series and covers the first half of European cities.

Data sources:

• Numbeo (1-bedroom rent & food price anchor)

• National statistical agencies (UK, IE, FR, ES, LU)

• Glassdoor (BE, NL) for salary estimates where official city-level data was limited

Index definition: USI = Housing burden + Essential food share (as % of gross income); Housing burden = 1BR rent / median income and food share = simplified essential consumption proxy

Both components are shown separately for transparency. The index is designed to reflect structural urban cost pressure rather than full household budgets.

Tools: Python (pandas) for data processing, Canvas for visualisation.