"As of 2013 COPD affects 329 million people or nearly 5 percent of the population. In 2013 it resulted in 2.9 million deaths, up from 2.4 million deaths in 1990. Greater than 90% of these deaths occur in the developing world. The number of deaths is projected to increase further because of higher smoking rates and an aging population in many countries. It resulted in an estimated economic cost of $2.1 trillion in 2010." [Wikipedia].