13. Reaffirms the commitment, and urges developed countries that have not yet done so, to make concrete efforts towards meeting the targets of 0.7 per cent of their gross national product for official development assistance to developing countries and 0.15 to 0.2 per cent of their gross national product to least developed countries, and encourages developing countries to build on the progress achieved in ensuring that official development assistance is used effectively to help to meet development goals and targets;
13. 重申承诺作出具体努力，使向发展中国家提供的官方发展援助达到占国民生产总值0.7％、向最不发达国家提供的官方发展援助达到占国民生产总值0.15％至0.2％的指标，并敦促尚未履行承诺的发达国家作出具体努力，鼓励发展中国家再接再厉，确保官方发展援助得到有效利用，以帮助实现发展目标和指标；