Raw data from WID is notoriously compact and uses a specific coding system. A typical wid_data.csv contains the following columns:
Pay attention to whether the data represents pre-tax or post-tax income, as this significantly changes the results. wid_data csv
"The data extracted from wid_data.csv reveals a stark divergence in economic fortunes over four decades. While the bottom 50% of earners saw their pre-tax income stagnate, growing by less than 10% in real terms, the top 1% captured the majority of overall economic growth. The CSV captures this transition precisely; the value associated with the p99p100 percentile tripled, validating the hypothesis of a 'hollowed-out' middle class." Raw data from WID is notoriously compact and
Data for numerous countries over time. Structure of the WID_Data.csv While the bottom 50% of earners saw their
Evaluating the impact of tax policies on income distribution.