even trained by Pakistan's Inter-Services Intelligence. They continued to support the Taliban, as Pakistani allies, in their push to conquer Afghanistan in the 1990s. The Islamic Army used child soldiers, many of them under 14 years old. The air force under the Taliban maintained 5 MIG-21 MFs and 10 Sukhoi-22 fighter bombers. They held six Mil-Mi 8 helicopters, five Mi-35s, five Aero L-39C Albatrossess, six An-12s transport aircraft, among others. Their civil air service contained Boeing 727A/Bs, a Tu-154, five An-24s, and a DHC-6. All of these aircraft were destroyed by US forces during the war in Afghanistan in 2001. Most of the MIG-21 fleets ended up in an Afghan junkyard. Conscription According to the testimony of Guantanamo captives before their Combatant Status Review Tribunals, the Taliban, in addition to conscripting men to serve as soldiers, also conscripted men to staff its civil service – both done at gunpoint. According to a report from Oxford University the Taliban made widespread use of the conscription of children in 1997, 1998 and 1999. Economy The Kabul money markets responded positively during the first weeks of the Taliban occupation. But the Afghani soon fell in value. They imposed a 50% tax on any company operating in the country, and those who failed to pay were attacked. They also imposed a 6% import tax on anything brought into the country, and by 1998 had control of the major airports and border crossings which allowed them to establish a monopoly on all trade. By 2001, the per-capita income of the 25 million population was under $200, and the country was close to total economic collapse. As of 2007, the economy had begun to recover, with estimated foreign reserves of three billion dollars and a 13% increase in economic growth. Under the Transit treaty between Afghanistan and Pakistan a massive network for smuggling developed. It had an estimated turnover of 2.5 billion dollars with the Taliban receiving between $100 and $130 million per year. These operations along with the trade from the Golden Crescent financed the war in Afghanistan and also had the side effect of destroying start up industries in Pakistan. Ahmed Rashid also explained that the Afghan Transit Trade agreed on by Pakistan was "the largest official source of revenue for the Taliban." Between 1996 and 1999 Mullah Omar reversed his opinions on the drug trade, apparently as it only harmed kafirs. The Taliban