Rows are repeating by the trigger function

Dear Folks,

I have a  table cf_question with 31 rows.

I want to insert/update another table cf_user_question_link  when cf_question table is inserted/updated with row(s). 

I have written trigger function for this as follows. 

CREATE FUNCTION user_question_link() RETURNS trigger AS

$user_question_link$

begin

SET search_path TO monolith;

INSERT INTO

cf_user_question_link(cf_user_id,cf_question_id)

VALUES(NEW.user_id,NEW.cf_question_id);

RETURN NEW;

end;

$user_question_link$

LANGUAGE plpgsql 

COST 100;

/* Call the trigger function */

CREATE TRIGGER insert_user_question_link AFTER INSERT OR UPDATE

ON monolith.cf_question

FOR EACH ROW EXECUTE PROCEDURE user_question_link();

Problem: The cf_user_question_link gets inserted with 94 rows instead of 31 rows. The 31 rows are repeated 3 times 

                 I tried dropping the trigger function and recreating it but with the same 94 rows in the table.

It would be great if any from the forum point to me where I am doing wrong.

regards

Kiran