12. Gains and losses on investment activities

for the year ended

31 December 2012 31 December 2011
Interest income 18,006 10,715
Other interest (5,084) (1,216)
Results on call options: - (3,125)
Foreign currency options not designated as hedging instruments - 580
Foreign currency options – settlement of instruments - (3,705)
Other foreign exchange gains/(losses) 999 (18,615)
Other investment income 796 49
Other finance costs (364) (2,814)
Total 14,353 (15,006)