Assets for: Top 100 Countries by Real Median Household Income (PPP), 2025

IMPORTANT NOTE (data coverage):
- A true cross-country "real median household income (PPP)" series with 100+ countries is not available from a single harmonized source.
- For this asset package, the ranking metric is a PROXY: GDP per capita, PPP (constant 2021 international $) from World Bank WDI (NY.GDP.PCAP.PP.KD).
- This proxy is useful for the *scatter* and *regional distribution* visuals, but it is NOT the same as median household income.

Files included:
- top10_proxy_ppp_gdp_per_capita_2025.csv
- top100_proxy_ppp_gdp_per_capita_2025.csv
- region_distribution_top100.csv
- scatter_ppp_proxy_vs_gdp_current.csv
- chart_top20_bar.png
- chart_region_distribution.png
- chart_scatter_ppp_vs_gdp_current.png

Sources (downloaded 2026-01-05):
- World Bank Data360 WDI extract (NY.GDP.PCAP.PP.KD): https://data360files.worldbank.org/data360-data/data/WB_WDI/WB_WDI_NY_GDP_PCAP_PP_KD_WIDEF.csv
- World Bank Data360 WDI extract (NY.GDP.PCAP.CD): https://data360files.worldbank.org/data360-data/data/WB_WDI/WB_WDI_NY_GDP_PCAP_CD.csv
- World Bank country metadata (region/income group): https://api.worldbank.org/v2/country?format=json&per_page=400

