May 21 (Reuters) - Canada's main stock index rose on Friday, drawing support from energy stocks that tracked a rise in crude oil prices as economic reopening raised summer demand hopes, while a rise in retail sales also lifted sentiment. * The Canadian dollar rose against its U.S. counterpart on Friday as investor worries about U.S. inflation receded, with the loonie moving closer to a six-year high notched earlier in the week. * The largest percentage gainer on the TSX was Village Farms International , which jumped 6.5% after announcing normal course issuer bid for common shares.