Bangladesh followed by 86.6 percent of the population. The country is home to most Bengali Muslims, the second-largest ethnic group in the Muslim world. Most Bangladeshi Muslims are Sunni, followed by Shia and Ahmadiya. About four percent are non-denominational Muslims. Bangladesh has the fourth-largest Muslim population in the world, and is the third-largest Muslim-majority country (after Indonesia and Pakistan). Sufism has a lengthy heritage in the region. The largest gathering of Muslims in Bangladesh is the Bishwa Ijtema, held annually by the Tablighi Jamaat. The Ijtema is the second-largest Muslim congregation in the world, after the Hajj. Hinduism is followed by
World population irrigation, and that many crops have become so genetically uniform that a crop failure in any one country could potentially have global repercussions. In 2004, a meta-analysis of 70 quantitative studies estimating a sustainable limit to the world population generated a meta-estimate of 7.7 billion people. In May 2008, the price of grain was pushed up severely by the increased cultivation of biofuels, the increase of world oil prices to over $140 per barrel ($880/m), global population growth, the effects of climate change, the loss of agricultural land to residential and industrial development, and growing consumer demand in the population