CREATE TABLE table_17814458_1 (capacity_in_persons_hour INT, construction_year_s_ VARCHAR)

Name the least capacity for persons hour for 1983
SELECT MIN(capacity_in_persons_hour) FROM table_17814458_1 WHERE construction_year_s_ = "1983"
SELECT MIN("capacity_in_persons_hour") FROM "table_17814458_1" WHERE "1983" = "construction_year_s_"