Name the total number of year for chassis of kurtis kraft 4000 and points more than 2
CREATE TABLE "complete_formula_one_world_championship_" (
  "year" real,
  "entrant" text,
  "chassis" text,
  "engine" text,
  "points" real
);
SELECT COUNT("year") FROM "complete_formula_one_world_championship_" WHERE "chassis"='kurtis kraft 4000' AND "points">2;