A bill aimed at encouraging more births by outlawing sterilisation and vasectomies has passed a first reading in Iran's parliament, media reported on Wednesday. Iran, which for more than two decades encouraged birth control, is **w concerned at the slowing of its annual population growth rate, which stood at 1.2 percent last year, the lowest in the region. According to health ministry figures, Iran's fertility rate is 1.8 percent, which a UN study said is leading to a rapidly ageing Iranian population. Iran's supreme leader Ayatollah Ali Khamenei has urged parliament to pass laws that will ensure a higher birth rate, with the aim of doubling the population from a current 77 million to 150 million within 50 years.