BANDAR LAMPUNG, Indonesia, June 2 (Reuters) - Robusta coffee bean exports from Indonesia's main growing area in Sumatra fell 66 percent to 7,609.34 tonnes in May from a year earlier, government trade data showed on Monday.     Indonesia shipped 22,588.86 tonnes of robusta in the same month a year earlier and 16,469.58 tonnes in April.     Indonesia, the third-largest coffee producer, will export 550,000 tonnes to 575,000 tonnes in 2014, up from 530,000 tonnes last year, according to the Indonesia Coffee Exporters Association.  
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            Sumatra coffee exports in 2013/2014:      Month          Exports (tonnes)    Percent change (y/y)          -----------------------------------------------------------     May             7,609.34              -66     April          16,469.58              +15     March           9,168.12              -36     February        7,559                 -68      January         8,299.19              +15     -----------------------------------------------------------      December       22,425.74              +18     November       51,613.24              +73       October        44,262.13              +30     September      55,470.47             +200      August         32,263.33              +39       July           55,709.32             +157        June           11,647.94              -21                  May            22,588.86             +141        April          14,330.22              +42        March          14,336.9              +183         February       23,912.15             +339          January         7,210.93              +14     -----------------------------------------------------------      2013 TOTAL:   355,771.23              +80            -----------------------------------------------------------      2012 TOTAL:   197,421.89             +0.2            -----------------------------------------------------------   (Reporting by Mas Alina Arifin; Writing by Fergus Jensen; Editing by Clarence Fernandez)  ((fergus.jensen@thomsonreuters.com)(+62 21 2992 7604)(Reuters Messaging: fergus.jensen.thomsonreuters.com@reuters.net))  Keywords: INDONESIA COFFEE/