While low-income shoppers are plentiful and have been the backbone of Wal-Mart's customer base for some time, they can be a bit fickle. The households that shop at Wal-Mart are more sensitive to energy prices, changes in the housing market, inflation, interest rates, and pretty much anything else that can reduce a person's disposable income, than the average American. This can obviously impact Wal-Mart, since so many of its customers make less than the national average. With crude oil selling at as high as $75 per barrell (over 50% higher than in January, 2007), energy costs could be taking an increasingly large chunk out the wallets of Wal-Mart's primary customers. Realizing this, Wal-Mart's been trying to tap into new customer demographics for the past year or so. It's introduced higher-end fashions to its stores, upped its offering of organic foods, and tried to pump life into the sluggish home decor segment. None of these moves on Wal-Mart's part, however, have worked very well. Higher-income customers are not as inclined to spend their money at Wal-Mart, where low prices are always number one. The low-price emphasis is all fine and well for Wal-Mart's existing customers, but the company's drilled this message home so well that it's having trouble attracting new, quality-conscious customers. This hasn't seemed to sink in at Wal-Mart just yet; as CEO Lee Scott recently said, "I don't think any customer has a problem buying a white blouse from Wal-Mart."