CREATE TABLE table_2479 ("Period" TEXT, "Civilians" FLOAT, "Security forces" FLOAT, "Insurgents" FLOAT, "Total per period" FLOAT)

How many insurgents have 2003 as a period?
SELECT COUNT("Insurgents") FROM table_2479 WHERE "Period" = '2003'
SELECT COUNT("Insurgents") FROM "table_2479" WHERE "Period" = '2003'