<prompt> Translate the following text to EnglishHakuna makadirio ya hii inapatikana lakini kama ukuaji ni juu, hasara ya huduma ya posta kwa ajili ya mpango inaweza kuwa chini, ambayo ingekuwa kuzalisha punguzo kubwa kuliko 4.5a.  <response>: No estimate of this is available but if the growth is high, the postal service loss for the program could be low, which would yield a discount larger than 4.5a. 