The Earning–Owning Gap dataset, version 1.0.2
Copyright (c) 2026 Tina Koziol

DATA (all .csv files in this folder)
Licensed under the Creative Commons Attribution 4.0 International licence (CC BY 4.0).
https://creativecommons.org/licenses/by/4.0/

You may share and adapt the data for any purpose, provided you give appropriate credit:
  Koziol, T. (2026). The Earning–Owning Gap dataset (Version 1.0.2) [Data set]. Bubble Tracker.
  https://bubble-tracker.com/research/earning-owning-gap

The data are derived from third-party sources, which you should also cite:
  - World Inequality Database (WID), https://wid.world
  - US Bureau of Labor Statistics via FRED; US Census Bureau; Office for National Statistics; INSEE; Eurostat.
  - Piketty, Saez & Zucman (2018) for us_psz_median_check_v1.csv; Piketty & Zucman (2014) for the anchor checks.
Their own terms apply to the underlying source data.

CODE (earning_owning_gap_code_v1.zip)
MIT License

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.