SQL & PL/SQL

I would like to generate number in the below range using a PLSQL block

00.000000

to

99.999999

How can I do this?

I tried with the below, upto 999 as sample but could not get the correct output

BEGIN
   FOR idx IN 00 .. 999
   LOOP
      DBMS_OUTPUT.put_line ('.' || idx);
   END LOOP;
END;
/

Appreciate any help.