ASi" kUCTURE FlOR DEVELOPMENT

Because of changes in GNP per capita, the coun- * Dollars are current U.S. dollars unless othertry
composition of each income group may change wise specified.
from one edition of World Development Report to the * Growtht rates are based on constant price data.
: next. Once the classification is fixed for any edition, and, unless otherwise noted, have been computed
all the historical and projected data presented are with the use of the least-squares method. See the
based on the same country grouping. The country technical notes to the WDI for details of this
groups used in this edition are defined as follows. method.
-* Lo-incomeeconomnies are those with a GNP per .The symbol J in dates, as in "'1990/91,' means
capita of $675 or less in 1992.
that the period of time may be less than two years
- Middle-income economnies are those with a CNP but straddles two calendar years and refers to a crop
per capita of more than $675 but less than $8,356 in year, a survey year, or a fiscal year.
1992. A further division, at ONP per capita of $2,695 * The symbol.. in tables means not available.
in 1992, is made between lower-middle-income and * 77w symbol - in tables means not applicable.
upper-middle-incomeconomies.
(In the WOI, a blank is used to mean not applicable.)
* High-incomeconomies are those with a ON? * The number 0 or 0.0 in tables and figures means
per capita of $8,356 or more in 1992.
zero or a quantity less than half the unit shown and
* World comprises all economies, including not known more precisely.
economies with sparse data and those with less than .The cutoff date for all data in the World Develop-
1 million pDpulation; these are not -shown sepa- ment Indicators is April 29,1994.
rately in the main tables but are presented in Table Historical data in this Report may differ from
la in the teclnical notes to the World Development those in previous editions because of continual up-
Indicators (WDI).
dating as better data become available, because of a
Low-income and middle-income economnies are change to a new base year for constant price data, or
'sometimes referred to as developing economies. because of changes in country composition in in-
The use of the term is convenient; it is not intended come and analytical groups.
to imply that al economies in the group are expen- Economic and demographic terms are defined in
encing similar development or that other economies the technical notes to the WDI.
have reached a preferred or final stage of development
Classification by income does not necessarily Acronyms and initials
-reflect development status. (In the WDI, highincome
economies classified as developing by the AGETIPs Agences d'Execution des Travaux d'In-
United Nations or regarded as developing by their
ter&t Pubic
authorities are identified by the symbol t). The use BOT Build-operate-transfer
of the term "countries" to refer to economnies implies DAC Development Assistance Committee
no judgment by the Bank about the legal or other GDP Gross domestic product
status of a territory. GNP Gross national product
For some analytical purposes, other overlapping IPP Independent power project
classifications that are based predominantly on ex- NGO Nongovernmental organization
ports or external debt are used, in addition to in- NTC National Telecommunications Commis
comes or geographic groups. Countries with sparse
sion
data and those with less than I million population, OECD Organization for Economic Cooperation
although not shown separately, are included in
and Development (Australia, Austria,
group aggregates.
Belgium, Canada, Deenmark,' Fmland,
The table "Classification of economies" at the
France, Germany, Greece, Iceland, reend
of the WDI lists countries by the WDrs income,
land, Italy, Japan, Luxembourg, Netherregional,
and analytical classifications-
lands, New Zealand, Norway, Portugal,
Spain, Sweden, Switzerland, Turkey,
Data notes
United Kingdom, and United States)
USAID United States Agency for International
* Billion is 1,000 million.
Development
T* rillion is 1,000 billion.
9.* Ts are metric tons, equal. to 1,000 kilograms,
or 2,204.6 pounds.
x