Per capita income
For purposes of subparagraph (A), per capita income shall be—
(i)#
determined at 2-year intervals;
(ii)#
applied for the 2-year period beginning on October 1 of the first fiscal year beginning on the date such determination is made; and
(iii)#
equal to the average of the annual per capita incomes for the most recent period of 3 consecutive years for which satisfactory data are available from the Department of Commerce at the time such determination is made.