Canada>Canada priligy dapoxetine india generico Since 2000, supercenters and warehouse clubs have more than doubled their market share among grocery retailers, according to recent data from the USDA. While these stores sold just 7.1 percent of groceries as of 2000, they sold 16 percent as of 2011. Much of that growth has come at the expense of traditional grocers, whose market share has fallen from 76.8 percent of sales to 69.9 percent.