| Data sources and definitions (2006 triennial review of the list of Least Developed Countries) Annex IV of the Handbook on the Least Developed Country Category |
Gross national income per capita
Gross national income (GNI) per capita
GNI per capita is equal to the per capita gross domestic product (GDP) minus per capita primary incomes payable to non-resident units plus per capita primary incomes receivable from non-resident units. Values are expressed in current United States dollars, calculated according to the World Bank Atlas method, and reflect a simple average of three years (2000, 2001 and 2002 for the 2006 triennial review).
Percentage of population undernourished Indicates the prevalence of undernourishment in the total population, that is to say, the proportion of the population whose dietary consumption continuously falls below an established minimum dietary energy requirement for maintaining a healthy life and carrying out light physical activity.
Assesses the probability of dying between birth and age five. It is expressed as deaths per 1,000 births.
Gross secondary school enrolment ratio Number of pupils enrolled in secondary schools, regardless of age, expressed as a percentage of the population in the theoretical age group for the same level of education.
Number of literate persons aged fifteen and above expressed as a percentage of the total population in that age group. A person is considered literate if he/she can read and write, with understanding, a simple statement related to his/her daily life.
Economic Vulnerability Index (EVI)
De facto population in a country as of 1 July of the year indicated.
Merchandise export concentration Expressed as Herfindahl-Hirschmann indices derived from three-digit SITC product categories (Revision 2 was used for the 2006 triennial review). For the purposes of the review of the list of LDCs, the Herfindahl-Hirschmann index is defined as the sum of squares of the percentages of the shares of each commodity as a proportion of total exports. If a country exports only one commodity, the index is 10,000. If there is a (near) infinite number of commodities with near-zero market shares each, the index is approximately zero. Results are normalized, however, and range from 0 to 1 (maximum concentration).
Share of agriculture, forestry and fisheries in GDP The statistical series “agriculture, hunting, forestry and fishing as percentages of GDP” is generated from national accounts value added at current prices (in United States dollars).
Homelessness due to natural disasters Homelessness is defined as “people needing immediate assistance for shelter after a natural disaster”, where a disaster is defined as “a situation or event, which overwhelms local capacity, necessitating a request at the national or international level for assistance; an unforeseen and often sudden event that causes great damage, destruction and human suffering”. The statistical series used in the calculations is the “number of homeless due to natural disasters during the period 1990-2004” expressed as a percentage of population in 1997. For countries with missing data, available data on the total number of persons affected by natural disasters were used to estimate the homelessness.
Instability of agricultural production Consists of a measure of annual fluctuations of agricultural output from its trend value in each country. The instability index is calculated by regression of a trend equation for agricultural output and using the standard error of the regression as the indicator of instability.
Instability of exports of goods and services Represents the value of exports of goods and services (in current United States dollars expressed as index numbers) deflated by an index of import unit values. The result approximates a measure commonly referred to as the purchasing power of exports, which is an indicator of the country’s capacity to import goods and services from current export earnings. The instability index is calculated by regression of a trend equation for exports (deflated by import unit values) and using the standard error of the regression as the indicator of instability.
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