Amway is the largest direct selling company and manufacturer in the world that uses network marketing to sell a variety of products, primarily in the health, beauty, and home care markets. Amway was founded in 1959 by Jay Van Andel and Richard DeVos. Based in Ada, Michigan, the company and family of companies under Alticor reported sales growth of 2.3%, reaching US$8.4 billion for the year ending December 31, 2009. Its product lines include home care products, personal care products, jewelry, electronics, Nutrilite dietary supplements, water purifiers, air purifiers, insurance and cosmetics. In 2004, Health & Beauty products accounted for nearly 60% of worldwide sales. Amway conducts business through a number of affiliated companies in more than ninety countries and territories around the world. It is ranked by Forbes as one of the largest private companies in the United States and by Deloitte as one of the largest retailers in the world.