The purity of cocaine coming into the United States is down while the price is up, according to a report that found smugglers relying increasingly on low-tech methods to get the drug across borders.

The report, released by the Drug Enforcement Administration, was another in a series of reports by the Bush administration, which says it is winning the war on drugs.A crackdown on drug trafficking by U.S. and foreign authorities has forced the smugglers to alter their methods, increasing the frequency of shipments while decreasing the amount of cocaine in each haul, the report said. Before the stepped-up efforts to catch them, smugglers used planes and boats to bring in relatively large caches of the drug.

The report said the national price of cocaine at the end of the fiscal year that ended Sept. 30 was between $13,000 and $40,000 for a kilogram. The year earlier the price was between $11,000 and $35,000.