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%).
Demographics of the Cayman Islands more even division of African and European ancestry. Those of mixed race make up 40% of the population, with blacks and whites following at 20% each. The remaining 20% belong to various immigrant ethnic groups. According to CIA factbook of 2013, Caymanian people of mixed-race of mixed black African and white European ancestry are the plurality ethnic group in the Cayman Islands, accounting for 40% of the country's population, with white 20%, black 20%, and expatriates of various ethnic groups 20%. The official language of the Cayman Islands is English. Islanders' accents retain elements passed down from English, Scottish, and