Demographics of Indonesia local ethnic languages are the first language of most Indonesians and are still important. Indonesia demographic composition has a relatively young population. According to 2011 estimate, total median age of Indonesia is 28.2 years. Total Fertility Rate (TFR) (Wanted Fertility Rate) and Crude Birth Rate (CBR): Total fertility rate (TFR) and population over age 60 by region as of 2010: Source: "UN World Population Prospects" There are over 300 ethnic groups in Indonesia. 95% of those are of Native Indonesian ancestry. Javanese is the largest group with 100 million people (42%), followed by Sundanese who number nearly 40 million (15%).
Betsileo people are known for their agricultural background and prowess as farmers. Their economic mainstay is rice cultivation, which is a staple food in Madagascar. The size and yield of a family’s rice plot often demarcates the wealth of that family. Betsileo people The Betsileo are a highland ethnic group of Madagascar, the third largest in terms of population, numbering around 1.5 million and making up about 12.1 percent of the population. They chose their name, meaning "The Many Invincible Ones", after a failed invasion by King Ramitraho of the Menabe kingdom in the early 19th century. The Betsileo occupy the south