<prompt> unaweza kugeuza matini haya ya swahilikwa kiingereza?sipri inasema algeria inaendelea kusalia kuwa nchi yenye matumizi makubwa kijeshi barani afrika lakini matumizi yake yalishuka katika mwaka 2017 kutokana na kushuka kwa bei ya mafuta na gesi.  <response>: opec says angola is the second biggest oil producer in africa but revenues have fallen since 2014 due to the drop in oil prices. 