Studies using FBI data and Police Reports of the incidents, have found that there are approximately 1,500 verified instances of firearms used in self-defense annually in the United States. Survey-based research derived from data gathered by the National Crime Victimization Survey has generated estimates that, out of roughly 5.5 million violent crime victims in the U.S. annually approximately 1.1 percent, or 55,000 used a firearm in self-defense (175,000 for the 3-year period.) When including property crimes, of the 15.5 million victims of property crimes annually found in the survey (46.5 million for 2013–2015), the NCV survey data yielded estimates that around 0.2 percent of property crime victims, or 36,000 annually (109,000 for the 3-year period) used a firearm in self-defense from the loss of property. Researchers working from the most recent NCVS data sets have found approximately 95,000 uses of a firearm in self-defense in the U.S. each year (284,000 for the years 2013–2015). In addition, the United States has a higher rate of firearm ownership than any other nation. The United States' gun homicide rate, while high compared to other developed nations, has been declining since the 1990s.