Which width had an entered service year of 2010?
CREATE TABLE "current_fleet" (
  "ship" text,
  "built" real,
  "entered_service" real,
  "route" text,
  "gross_tonnage" text,
  "length" text,
  "width" text,
  "passengers" real,
  "vessels" real,
  "knots" real
);
SELECT "width" FROM "current_fleet" WHERE "entered_service"=2010;