CREATE TABLE table_17625 ("Municipality" TEXT, "Population" FLOAT, "Police officers" FLOAT, "Residents per officer" FLOAT, "Total costs  ( 2005 ) " TEXT, "Cost per capita" TEXT, "Case burden" FLOAT, "Crime rate per 1 , 000 people" FLOAT, "Police force" TEXT)

Which police force serves a population of 17000?
SELECT "Police force" FROM table_17625 WHERE "Population" = '17000'
SELECT "Police force" FROM "table_17625" WHERE "Population" = '17000'