{"source_id":"kushiro_population_by_age","metric_count":75750,"point_count":0,"latest_fetched_at":"2026-08-17T18:03:31.685Z","metrics":[{"name":"population_female","count":25250,"unit":"persons","period_range":{"start":"2005-10-01","end":"2026-07-31"}},{"name":"population_male","count":25250,"unit":"persons","period_range":{"start":"2005-10-01","end":"2026-07-31"}},{"name":"population_total","count":25250,"unit":"persons","period_range":{"start":"2005-10-01","end":"2026-07-31"}}]}