Explanation:

Afghanistan has been the world's leading illicit opium producer since 2001. Afghanistan's opium poppy harvest produces more than 90% of illicit heroin globally, and more than 95% of the European supply. More land is used for opium in Afghanistan than is used for coca cultivation in Latin America. In 2007, 93% of the non-pharmaceutical-grade opiates on the world market originated in Afghanistan. This amounts to an export value of about US$4 billion, with a quarter being earned by opium farmers and the rest going to district officials, insurgents, warlords, and drug traffickers.