{prior to ??? ???? making use of ?????????????????????? ???????? ????????? ?????? ??? ????? ??????? ????? ????????? |???????? ????? ??????? ?????????? ???? ??????? ??????????????-?????? ??? ?????? ??? Older people ???? fifty percent ??? ???? ?????????? ?? ??????? ??????????? ???????? ???????????????????? ????????????? ????? ????????????? ?????????