The ecopoints of the Community reserve are to be allocated by the Commission to the Member States, according to the procedure set out in Article 16 of Protocol No 9, at least one month before the end of the year, taking into account the manner in which each Member State managed the ecopoints allocated to it and the objective needs of the hauliers of each Member State, which may, in particular, be determined using the following criteria: ... - problems with the technical upgrading of the vehicle fleet concerning NOx emissions ...