Cambodia's population had doubled in the past 30 years from 6.9 million to 14.4 million, and their population is still growing. This is because not only Cambodia is a developing country, but it's also recovering from its genocide that occurred in 1975-1979, which killed between 1.5 million to 3 million people. Even though refugees were leaving Cambodia from 1980s to early 1990s due to the genocide, Cambodia still experienced population growth in these years, which shows that Cambodia was recovering.