<p>TANZANIAN shilling is one of the stable currencies in Africa in a year-to-date and tipped to strengthen further on the back of new cashew nut season.The shilling is on number five after it registered a negative spot return of 0.12 per cent since last October, according to Bloomberg's World Currency Ranker. <br></p><p> The shilling was behind Djiboutian franc that slipped by 0.01, followed by Malawian Kwacha that registered 0.79 per cent positive spot return.The report, ranking currencies in a real time, showed that Nigerian naira was second best currency in Africa after posting a positive spot return of 1.08 per cent. <br></p>