to volunteer for military service from 15 years of age, and 18 years of age for compulsory National military service upon graduation from advanced secondary school. Conscript service obligation was 2 years as of 2004. Human rights Throughout Tanzania, sex acts between men are illegal and carry a maximum penalty of life imprisonment. According to a 2007 Pew Research Centre survey, 95 percent of Tanzanians believed that homosexuality should not be accepted by society. People with albinism living in Tanzania are often attacked, killed or mutilated because of superstitions related to the black-magical practice known as muti that say body parts of albinos have magical properties. Tanzania has the highest occurrence of this human rights violation among 27 African countries where muti is known to be practised. In December 2019, Amnesty International reported that the Tanzanian government annulled the right of NGOs as well as individuals to directly file any case against it at the Arusha-based African Court for Human and Peoples' Rights. Economy and infrastructure , according to the IMF, Tanzania's gross domestic product (GDP) was an estimated $71 billion (nominal), or $218.5 billion on a purchasing power parity (PPP) basis. GDP per capita (PPP) was $3,574. From 2009 through to 2013, Tanzania's per capita GDP (based on constant local currency) grew an average of 3.5% per year, higher than any other member of the East African Community (EAC) and exceeded by only nine countries in Sub-Saharan Africa: the Democratic Republic of the Congo, Ethiopia, Ghana, Lesotho, Liberia, Mozambique, Sierra Leone, Zambia, and Zimbabwe. Tanzania's largest trading partners in 2017 for its US$5.3 billion in exports were India, Vietnam, South Africa, Switzerland, and China. Its imports totalled US$8.17 billion, with India, Switzerland, Saudi Arabia, China, and the United Arab Emirates being the biggest partners. Tanzania weathered the Great Recession, which began in late 2008 or early 2009, relatively well. Strong gold prices, bolstering the country's mining industry, and Tanzania's poor integration into global markets helped to insulate the country from the downturn. Since the recession ended, the Tanzanian economy has expanded rapidly thanks to strong tourism, telecommunications, and banking sectors. According to the United Nations Development Programme, however, recent growth in the national economy has benefited only the "very few", leaving out the majority of the population. Tanzania's 2013 Global Hunger Index was worse than any other country in the EAC except Burundi. The proportion of persons who were