Hero Honda Motors has reported a 6.5% rise in May sales at 2,26,072 units against 2,12,177 units in the same month last year.The company's sales in the domestic market were up 4.5% to 2,16,971 units (2,07,507).Exports in the month nearly doubled to 9,101 units from 4,670 units in May 2004.The company's sales, including exports, during April-May '05 grew 13% to 4,61,494 units against 4,08,201 units in the corresponding period last year. This included 17,516 units of exports against 7,986 units in April-May '04, the company said.