Sans Frontieres in Dagahley refugee camp. Although refugees arriving at Dadaab receive assistance from each of these organizations, aid is often not immediate due to overcrowding. Other relief organizations include Danish Refugee Agency (DRC), Norwegian Refugee Agency (NRC), Windle International, Lutheran World Federation, Center for Victims of Torture, In July 2011, due to a drought in Eastern Africa, over 1,000 people per day were arriving in need of assistance. The influx reportedly placed great strain on the resources, as the capacity of the camps was around 90,000, whereas the camps hosted 439,000 refugees in July 2011 according to the UNHCR. The number was predicted to increase to 500,000 by the end of 2011 according to estimates from Médecins Sans Frontières. Those population figures at the time made Dadaab the largest refugee camp in the world. According to the Lutheran World Federation, military operations in the conflict zones of southern Somalia and a scaling up of relief operations had by early December 2011 greatly reduced the movement of migrants into Dadaab. Demographics Before the UNHCR base was opened, the local town population traditionally consisted of nomadic ethnic Somali pastoralists, who were mainly camel and goat herders. However, since the 1990s, an influx of refugees has dramatically shifted the demographics of the area. Most of the people living in Dadaab have fled various conflicts in the broader Eastern Africa region. The majority have come as a consequence of the civil war in southern Somalia as well as due to droughts. According to Human Rights Watch, most of these displaced persons belong to the Bantu ethnic minority population as well as the Rahanweyn clan. Most of the latter have migrated from the southern Jubba Valley and the Gedo region, while the remainder have arrived from Kismayo, Mogadishu and Bardera. In 2005, around 97% of registered refugees at Dadaab were Muslims from Somalia. The remainder mainly consisted of Muslims from the Somali Region (Ogaden) in Ethiopia, Ethiopian Christians and Sudanese Christians, totalling 4,000 individuals. While the Muslim minorities did not face any persecution, tensions with the Christian minorities were reportedly high. According to the UNHCR, 80% of residents were women and children and 95% were Somalia nationals as of mid-2015. Of the registered refugee population from Somalia, the number of men and women is equal, but only 4% of the total population is over the age of sixty. Each year, thousands of children are