[["", "2017", "2016"], ["average borrowings", "$ 779", "$ 850"], ["maximum borrowings outstanding", "1135", "1016"], ["weighted average interest rates computed on daily basis", "1.24% ( 1.24 % )", "0.78% ( 0.78 % )"], ["weighted average interest rates as of december 31", "1.61% ( 1.61 % )", "0.98% ( 0.98 % )"]]