ABIDJAN, July 30 (Reuters) - Ivory Coast's natural rubber exports rose nearly 19 percent to 152,800 tonnes by end-June since the start of the year compared with the same period last year, provisional port data showed on Tuesday. Ivory Coast, the world's top cocoa producer, is also Africa's leading grower of natural rubber. Natural rubber exports have grown in recent years as farmers, lured by the promise of more stable incomes, have increasingly made the switch from cocoa. Following are port figures in tonnes for June: June 2013 May 2013 June 2012 Abidjan 15,579 11,075 12,521 San Pedro 14,357 11,216 9,066 Total 29,936 22,291 21,587 Cumulative from Jan 152,800 122,864 128,694 NOTE: June data for Abidjan is provisional and could be subject to revision. May data for Abidjan was revised to 11,075 tonnes, from 9,990 tonnes previously. (Reporting by Loucoumane Coulibaly; Editing by Joe Bavier)