Growth rate (population): The annual percent change in the population, resulting from a surplus (or deficit) of births over deaths and the balance of migrants entering and leaving a country. The rate may be positive or negative.
Illicit drugs: There are five categories of illicit drugs - narcotics, stimulants, depressants (sedatives), hallucinogens, and cannabis. These categories include many drugs legally produced and prescribed by doctors as well as those illegally produced and sold outside medical channels. Cannabis (Cannabis sativa) is the common hemp plant, which provides hallucinogens with some sedative properties, and includes marijuana (pot, Acapulco gold, grass, reefer), tetrahydrocannabinol (THC, Marinol), hashish (hash), and hashish oil (hash oil). Coca (Erythroxylum coca) is a bush, and the leaves contain the stimulant used to make cocaine. Coca is not to be confused with cocoa, which comes from cacao seeds and is used in making chocolate, cocoa, and cocoa butter. Cocaine is a stimulant derived from the leaves of the coca bush. Depressants (sedatives) are drugs that reduce tension and anxiety and include chloral hydrate, barbiturates (Amytal, Nembutal, Seconal, phenobarbital), benzodiazepines (Librium, Valium), methaqualone (Quaalude), glutethimide (Doriden), and others (Equanil, Placidyl, Valmid). Drugs are any chemical substances that effect a physical, mental, emotional, or behavioral change in an individual. Drug abuse is the use of any licit or illicit chemical substance that results in physical, mental, emotional, or behavioral impairment in an individual. Hallucinogens are drugs that affect sensation, thinking, self-awareness, and emotion. Hallucinogens include LSD (acid, microdot), mescaline and peyote (mexc, buttons, cactus), amphetamine variants (PMA, STP, DOB), phencyclidine (PCP, angel dust, hog), phencyclidine analogues (PCE, PCPy, TCP), and others (psilocybin, psilocyn). Hashish is the resinous exudate of the cannabis or hemp plant (Cannabis sativa). Heroin is a semisynthetic derivative of morphine. Mandrax is the Southwest Asian slang term for methaqualone, a pharmaceutical depressant. Marijuana is the dried leaves of the cannabis or hemp plant (Cannabis sativa). Methaqualone is a pharmaceutical depressant, in slang referred to as Quaaludes in North America or Mandrax in Southwest Asia Narcotics are drugs that relieve pain, often induce sleep, and refer to opium, opium derivatives, and synthetic substitutes. Natural narcotics include opium (paregoric, parepectolin), morphine (MS-Contin, Roxanol), codeine (Tylenol with codeine, Empirin with codeine, Robitussan AC), and thebaine. Semisynthetic narcotics include heroin (horse, smack), and hydromorphone (Dilaudid). Synthetic narcotics include meperidine or Pethidine (Demerol, Mepergan), methadone (Dolophine, Methadose), and others (Darvon, Lomotil). Opium is the milky exudate of the incised, unripe seedpod of the opium poppy. Opium poppy (Papaver somniferum) is the source for many natural and semisynthetic narcotics. Poppy straw concentrate is the alkaloid derived from the mature dried opium poppy. Qat (kat, khat) is a stimulant from the buds or leaves of catha edulis that is chewed or drunk as tea. Quaaludes is the North American slang term for methaqualone, a pharmaceutical depressant. Stimulants are drugs that relieve mild depression, increase energy and activity, and include cocaine (coke, snow, crack), amphetamines (Desoxyn, Dexedrine), phenmetrazine (Preludin), methylphenidate (Ritalin), and others (Cylert, Sanorex, Tenuate).
Infant mortality rate: The number of deaths to infants under one year old in a given year per l,000 live births occurring in the same year.
International disputes: This category includes a wide variety of situations that range from traditional bilateral boundary disputes to unilateral claims of one sort or another. Information regarding disputes over international boundaries and maritime boundaries has been reviewed by the Department of State. References to other situations involving borders or frontiers may also be included, such as resource disputes, geopolitical questions, or irredentist issues. However, inclusion does not necessarily constitute official acceptance or recognition by the US Government.
Irrigated land: The figure refers to the land area that is artificially supplied with water.
Land use: The land surface is categorized as arable land - land cultivated for crops that are replanted after each harvest (wheat, maize, rice); permanent crops - land cultivated for crops that are not replanted after each harvest (citrus, coffee, rubber); meadows and pastures - land permanently used for herbaceous forage crops; forest and woodland - under dense or open stands of trees; and other - any land type not specifically mentioned above (urban areas, roads, desert).
Leaders: The chief of state is the titular leader of the country who represents the state at official and ceremonial functions but is not involved with the day- to-day activities of the government. The head of government is the administrative leader who manages the day-to-day activities of the government. In the UK, the monarch is the chief of state, and the Prime Minister is the head of government. In the US, the President is both the chief of state and the head of government.
Life expectancy at birth: The average number of years to be lived by a group of people all born in the same year, if mortality at each age remains constant in the future.
Literacy: There are no universal definitions and standards of literacy. Unless otherwise noted, all rates are based on the most common definition - the ability to read and write at a specified age. Detailing the standards that individual countries use to assess the ability to read and write is beyond the scope of this publication.
Maritime claims: The proximity of neighboring states may prevent some national claims from being extended the full distance.