? ???? ?????? ?? ?????????? ????????? ?????? ????????? ??????? ???????? ?????, ????????? ?? ?????.??? ????????? ???? ? ????? ????? ?????????? ???????? ??? ? ?????????????? ???? ?????????? ?? ?????.??, ????-???????? ????????? ?????????????????? ????? ?? ??????? ????????? ????????.It warns that rates of switching have been in decline since 2012, desp