3The initial operation of a separate account referred to in article 16, paragraph 2 shall be postponed until such time as the quantities of contributing cargo in respect of that account during the preceding calendar year, or such other year as the Assembly may decide, exceed the following levels:
(a)350 million tonnes of contributing cargo in respect of the oil account;
(b)20 million tonnes of contributing cargo in respect of the LNG account; and
(c)15 million tonnes of contributing cargo in respect of the LPG account.