Where the period for which interest is owed is more than one year, interest for the first year shall be calculated in accordance with paragraph (1) and interest for each additional year shall be calculated on the amount by which the award of compensation is more than the deposit referred to in
section 3114 of this title, plus accrued interest, at an annual rate equal to the weekly average one-year constant maturity Treasury yield, as published by the Board of Governors of the Federal Reserve System, for the calendar week preceding the beginning of each additional year.