|Estimate of heroin/morphine derivatives available for export|
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The UNODC figures are derived from their estimates that 60 per cent. of opium is converted into heroin in Afghanistan and 40 per cent. is exported. From 2000 to 2004, UNODC used a 10:1 ratio for the conversion of opium into heroin. This was revised to 7:1 in 2005 to reflect the higher morphine content of Afghan opium. The figures for opium production are adjusted to take into account the impact of seizures and local consumption.
Estimates of the potential opium and heroin production in Afghanistan for 2009 will be made after the harvesting of opium is complete in July. The UNODC will publish estimates of opium production in its annual Afghan Opium Survey which is likely to be available in Executive summary form in August.