processed = raw.map(row => ({
country: row['country_code'],
year: parseInt(row['year'], 10),
reportingLevel: row['reporting_level'],
welfareType: row['welfare_type'],
percentile: parseInt(row['percentile'], 10),
avg: Number(row['avg_welfare']),
share: Number(row['welfare_share']),
quantile: Number(row['quantile'])
}));