Lithuania is a country with an approximate area of 65 000 km2. Its population is 3.422 million, and the gender ratio (expressed as men per 100 women) is 87. The proportion of the population under the age of 15 years is 18%, and the proportion above the age of 60 years is 20%. The literacy rate is 99.6% for both men and women. The country is in the higher middle-income group (by World Bank 2004 criteria).