CREATE TABLE table_204_544 (id DECIMAL, "rank" DECIMAL, "name" TEXT, "nationality" TEXT, "time" TEXT, "notes" TEXT)

in the 2002 pan pacific swimming championships women 's 100 metre backstroke , which nation placed the most swimmers in the top eight ?
SELECT "nationality" FROM table_204_544 WHERE "rank" <= 8 GROUP BY "nationality" ORDER BY COUNT("name") DESC LIMIT 1
SELECT "nationality" FROM "table_204_544" WHERE "rank" <= 8 GROUP BY "nationality" ORDER BY COUNT("name") DESC NULLS LAST LIMIT 1