{"text_format":"dbase-jsonl-2026-09-30","columns":[{"name":"YEAR","type":"character","width":12},{"name":"ROAD_CONTR","type":"number","width":17,"decimals":2}],"n_rows":6,"rows_kept":6,"cut":false,"deleted_skipped":0,"read_ended":"whole","bounds":"16MiB/16384/4096/first_that_fit","version":"dbase_level_three","encoding_class":"enc_absent","reader":"statdb_count/9"}
["1921-36",12.03]
["1937-52",18.62]
["1953-65",11.21]
["1966-78",4.31]
["1979-88",13.89]
["1989-2000",24.79]