SQL & PL/SQL

Hi, I know I can use COLUMN_VALUE to select column values from table collection expression. Is there any way to select the number of the element as well? (with Oracle 11.2.0.1.0)

CREATE OR REPLACE TYPE plch_numbers_nt IS TABLE OF NUMBER;
/

DECLARE
   l_numbers   plch_numbers_nt
                  := plch_numbers_nt (10,
                                      20,
                                      30,
                                      40,
                                      50);
BEGIN
   -- This would be nice...
   FOR rec IN (SELECT COLUMN_VALUE, VALUE_INDEX FROM TABLE (l_numbers))
   LOOP
      DBMS_OUTPUT.put_line (rec.COLUMN_VALUE, rec.VALUE_INDEX);
   END LOOP;
END;
/