RABAT – Moroccan fertiliser company Office Cherifien de Phosphate (OCP), the world’s leading phosphate exporter, reported 2015 net profit up 57.8% year-on-year to 8.01 billion dirhams ($825.8-million) on Tuesday, attributing the rise to higher output. State-run OCP, a major earner of foreign currency for Morocco, has been increasing production in recent years to help to offset a slide in prices.