{"source_id":"kushiro_population_by_age","metric_count":74841,"point_count":0,"latest_fetched_at":"2026-05-31T18:07:25.237Z","metrics":[{"name":"population_female","count":24947,"unit":"persons","period_range":{"start":"2005-10-01","end":"2026-04-30"}},{"name":"population_male","count":24947,"unit":"persons","period_range":{"start":"2005-10-01","end":"2026-04-30"}},{"name":"population_total","count":24947,"unit":"persons","period_range":{"start":"2005-10-01","end":"2026-04-30"}}]}