Artikel 22

1. The unit of account referred to in Article 21 is the Special Drawing Right as defined in accordance with the instructions of the International Monetary Fund. The amount referred to in Article 21 is to be converted into the national currency of a State according to the value of such currency at the date of judgement or award or the date agreed upon by the parties to the contract. Where the calculation of an amount requires the conversion of sums expressed in foreign currency, conversion shall be at the exchange rate applicable on the day and at the place of payment.
2. The value of a national currency, in terms of the Special Drawing Right, of a Party to this Convention that is a member of the International Monetary Fund is to be calculated in accordance with the method of valuation applied by the International Monetary Fund in effect at the date in question for its operations and transactions. The value of a national currency, in terms of the Special Drawing Right, of a Party to this Convention that is not a member of the International Monetary Fund is to be calculated in a manner to be determined by that Party.