Since 1998, the price of the Louis Vuitton "Speedy" handbag has more than doubled, to $685, while the price of Joe Boxer's "licky face" underwear has dropped by nearly half, to $8.99. As luxury fashion has become more expensive, mainstream apparel has become markedly less so. Clothing is one of the few categories in the CPI in which overall prices have declined- about 10 percent-since 1998. Source: The New York Times, May 29, 2008 a. What percentage of the CPI basket docs ap- parel comprise? b. If luxury clothing prices have increased dra- matically since the late 1990s, why has the clothing category of the CPI actually declined by about 10 percent?