By 15 December 2010, the Commission shall present a report to the European Parliament and to the Council on the threshold percentages in Article 3(6), paying particular attention to the possible expediency and consequences of a reduction of the percentage in points (a)(i), (b)(i) and (b)(iii) of Article 3(6) from 25 % to 20 %. On the basis of the report the Commission may submit a proposal for amendments to this Directive.