(or Rhee) family today in South Korea. Nowadays, most Vietnamese immigrants are either manual labor workers, marriage immigrants, or cooks in Vietnamese cuisines. Filipinos in South Korea Relationship between Filipinos and South Koreans can be traced back to 1950s during the Korean War. Over 7,500 Filipino soldiers fought on the United Nations' side to help South Korea. As of 2019, there were more than 55,000 Filipino immigrants living in South Korea. Population decline in rural regions led to shortage of young people especially young women in those areas and it led many Koreans to marry Filipino brides. Foreign population There are 2,524,656 foreign residents in South Korea as of December 2019. These figures exclude foreign-born citizens who have naturalized and obtained South Korean citizenship; the total number of naturalized South Korean citizens surpassed 200,000 in 2019. Among these numbers, 792,853 of these people are short-term residents. Many of the foreign residents from China, Uzbekistan, Russia, and Kazakhstan are repatriated ethnic Koreans. Languages The Korean language is the native language spoken by the vast majority of the population. English is widely taught in both public and private schools as a foreign language. However, general fluency in English in the country is relatively low compared to other industrialized developed countries. There is a Chinese minority who speak Mandarin and Cantonese. Some elderly may still be able to speak Japanese, which was de facto (1910–1938) and de jure (1938–1945) official during the Japanese rule in Korea. In different areas of South Korea, different dialects are spoken. For example, the Gyeongsang dialect spoken around Busan and Daegu to the south is often perceived to sound quite rough and aggressive compared to standard Korean. Religion Koreans have historically, lived under the religious influences of shamanism, Buddhism, Daoism, or Confucianism. Korea is a country where three of the world's major religions, Christianity, Buddhism, and Confucianism peacefully coexist. According to 2015 statistics, 43.1% of Korean population has a religion and 2008 statistics show that over 510 religious organizations were in the South Korea population. Irreligious: 60% Christianity: 23% Buddhism: 16% Other religions: 1% CIA World Factbook demographic statistics The following demographic statistics are from the CIA World Factbook, unless otherwise indicated. Age structure 0–14 years: 13.21% (male 3,484,398/female 3,276,984) 15–24 years: 12.66% (male 3,415,998/female 3,065,144) 25–54 years: 45.52% (male 11,992,462/female 11,303,726) 55–64 years: 14.49% (male 3,660,888/female 3,756,947) 65 years and over: 14.12% (male 3,080,601/female 4,144,151) (2017 est.)