In total, through 2010, Pakistan has produced enough weapon-grade uranium and plutonium for roughly 100-170 nuclear weapons. Based on available information, the number of deployed weapons is probably less. Assuming that about 30 percent of its stock of weapon-grade uranium and plutonium is located in its weapons production pipeline, stored, or otherwise unused in weapons, Pakistan has an estimated total of 70-120 nuclear weapons. It can currently add to that stock at the rate of about 7-14 warheads per year and that value will go up to 19-26 warheads per year when all four Khushab reactors are operational.