Burkina Faso’s economy is predominantly agrarian-based. Over 90 percent of the country’s population lives in rural areas and more than 80 percent of the working population derives their income from agriculture, mostly subsistence farming. Due to the country’s reliance on agriculture, Burkina Faso is susceptible to environmental crises. Severe weather fluctuations, such as a reduction in rainfall that damages agriculture, cause severe decreases in families’ income causing malnutrition and other health-related problems. The country’s population is particularly destitute. Most recently, the UNDP Human Development Index that is based on three basic dimensions of human development - health, education and income - rated Burkina Faso one of the lowest in the world (161 out of 169 countries). Over 40 percent of the country’s population lives under the poverty line and more than 20 percent of the population lives permanently in chronic poverty and is food insecure. .