1. The Parties included in Annex I shall, individually or jointly, ensure that their aggregate anthropogenic carbon dioxide equivalent emissions of the greenhouse gases listed in Annex A do not exceed their assigned amounts in accordance with the provisions of this Article, plus their high-trend adjustment amounts if any, with a view to reducing their overall emission of such gases by at least [40] per cent below 1990 levels in the commitment period [2013 to 2017].
1. The Parties included in Annex I shall, individually or jointly, ensure that their aggregate anthropogenic carbon dioxide equivalent emissions of the greenhouse gases listed in Annex A do not exceed their assigned amounts in accordance with the provisions of this Article, plus their high-trend adjustment amounts if any, with a view to reducing their overall emission of such gases by at least [40] per cent below 1990 levels in the commitment period [2013 to 2017].