Before the end of the 1981/82 to 1985/86 marketing years, there shall be recorded:
(a) estimates of the production of A and B sugar and on A and B isoglucose attributable to the marketing year in question;
(b) estimates of the quantities of sugar and isoglucose disposed of for consumption within the Community during the marketing year in question;
(c) the exportable surplus obtained by subtracting the quantity referred to in (b) from the quantity referred to in (a) ...