Falling for the fifth straight session, the Sensex at the Bombay Stock Exchange lost 204 points, or 1.3 percent, to a new 28-month low of 15,175, today, on sustained selling by funds, amid a slowdown in growth, and a weakening rupee. The Sensex had already lost more than 620 points in the previous four trading sessions. The Nifty at the National Stock Exchange declined 69 points, or 1.5 percent, to 4,544. Stock markets in Japan, China, Hong Kong, South Korea and Singapore ended mixed.