In the mid-20th century, Costa Rica’s population growth rate was among the highest in the world. As general prosperity and urbanization increased, however, the population growth rate decreased despite a drop in both the general and infant mortality rates. This decrease in the population growth rate was largely attributable to the fact that, by the late 20th century, middle-class Costa Rican families were having fewer children than previous generations. Life expectancy in Costa Rica is substantially longer than in most other Central American countries and is more comparable to life expectancies in developed countries.

European immigration and customs have helped to mold Costa Rican history and influence its character. German, Italian, and British immigrants in the 19th century left an imprint on Costa Rican education, science, and culture. In the 1970s immigrants mainly came from Argentina, Chile, and Colombia. However, in the 1980s immigrants and refugees arrived from nearby countries. Economic problems and political and armed conflict in Nicaragua and other Central American countries drove thousands of refugees (mainly mestizos) into Costa Rica, altering the ethnic composition of the country. Since the 1990s there has been a constant flow into Costa Rica of Nicaraguans, more than 400,000 of whom were estimated to be living in the country in the early 2000s. Many of these immigrants face barriers in housing, education, and health care and live in run-down neighbourhoods. During Nicaragua’s dictatorship and civil war in the 1980s, the Costa Rican government set up refugee camps to aid its neighbours. Furthermore, after Hurricane Mitch in 1998, Costa Rica granted asylum to many Nicaraguan refugees. In the early 2000s, however, the government enforced harsher measures to control illegal immigration, including tighter border controls and fines for businesses that employed undocumented workers. It is estimated that one-tenth of the Nicaraguans in Costa Rica are illegal aliens. Nationwide polls show that many Costa Ricans possess negative stereotypes of Nicaraguans. Costa Rica has also become a mecca for retirees from the United States, tens of thousands of whom now live there.

Agriculture, forestry, and fishing

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Notwithstanding the country’s traditional dependence on agriculture, fewer than one-sixth of economically active Costa Ricans work in the agricultural sector, which contributes about one-tenth of GNP. Sugar and coffee, from the highlands; bananas, produced mainly in the Caribbean lowlands; and pineapples, grown in farms located throughout the country, are some of the most important crops, accounting for nearly half the total value of all exports. Nontraditional agricultural products such as cut flowers, gourmet coffee, herbs, and macadamia nuts have increased in importance, and manufactured food products, fertilizer, handicrafts, garments, and publishing also have made inroads in the traditional economy. Palm oil for domestic consumption is an important product from the southern Pacific lowlands. Costa Rica has the capacity to feed itself but dedicates a large share of its land to the production of export crops.

Extensive deforestation went unchecked in the last few decades of the 20th century, when much of Costa Rica’s timber reserves were cleared to make way for pasture or cropland. But by the end of the century the government had taken measures to limit use of trees for wood and fuel, had joined the private sector in further managing forest harvesting, and was compensating owners of woodlands for the environmental benefits of maintaining their forests. The best remaining stands of tropical hardwoods are in protected parks and forest reserves.

Costa Rica’s fishing industry, concentrated mostly on the Pacific coast and focusing primarily on tuna and shrimp, supplies both the domestic market and exports. Tilapia fish farming, which grew significantly in the 1990s, has made Costa Rica the principal supplier of tilapia to the United States.