RELATED SPENDING GOES ON PREVENTION, WITH 96 PERCENT GOING ON RELIEF AND RECOVERY. THE TSUNAMI LEFT AROUND 230,000 PEOPLE DEAD OR MISSING AFTER IT SLAMMED INTO A DOZEN COUNTRIES ON DEC. 26, 2004. U.N. UNDER-SECRETARY GENERAL FOR HUMANITARIAN AFFAIRS JAN EGELAND SAID AN EARLY WARNING SYSTEM WOULD HAVE SAVED MOST OF THOSE KILLED. THE SYSTEM NOW BEING INSTALLED IN THE INDIAN OCEAN COSTS $40 MILLION TO $50 MILLION -- THE BILL FOR REBUILDING AFTER THE TSUNAMI WILL BE $12 BILLION, HE SAID. CLINTON TOLD THE CONFERENCE ABOUT 50,000 PEOPLE WERE STILL IN TENTS BUT NEARLY 100,000 HOUSES AND 400 SCHOOLS HAD BEEN REBUILT OR WERE UNDER CONSTRUCTION, AND SIGNIFICANT PROGRESS HAD BEEN MADE TOWARDS DEVELOPING AN INDIAN OCEAN TSUNAMI EARLY WARNING SYSTEM.