What is the total of TCKL in 2000 with a P/KO RET less than 14?
CREATE TABLE "high_school_statistics" (
  "year" text,
  "tckl" real,
  "sack" real,
  "p_ko_ret" real,
  "yards" real
);
SELECT COUNT("tckl") FROM "high_school_statistics" WHERE "year"='2000' AND "p_ko_ret"<14;