4. The Minister is hereby authorised to subscribe on behalf of the Government —
(a)
to shares of the original authorised capital stock of the Bank in accordance with paragraph 1 of Article 5 to such amount as will not exceed US$5 million;
(b)
where the original authorised capital stock of the Bank is increased in accordance with paragraph 2 of Article 5, to a proportion of the increase of stock as provided in that paragraph; and
(c)
where the shares of Singapore have been increased at the request of the Government in accordance with paragraph 3 of Article 5, to the amount of such increase:
Provided that the subscription of Singapore shall not be increased, except with the approval signified by resolution of Parliament, so that its total subscription exceeds the sum of US$10 million.