According to the National Missing and Unidentified Persons (NamUS) database, which is funded by the U.S. Department of Justice, more than 600,000 people go missing annually. Approximately 4,400 unidentified bodies are recovered each year. Nationwide, there are roughly 6.5 missing persons for every 100,000 people. 美国每年60w失踪人口?? 这是真的数字吗?