CREATE TABLE table_204_514 (id DECIMAL, "date" TEXT, "sub" DECIMAL, "flight" TEXT, "dead" DECIMAL, "hurt" DECIMAL, "pax." DECIMAL, "type" TEXT, "perpetrator" TEXT, "description" TEXT)

what is the last date on the chart ?
SELECT "date" FROM table_204_514 ORDER BY "date" DESC LIMIT 1
SELECT "date" FROM "table_204_514" ORDER BY "date" DESC NULLS LAST LIMIT 1