descent are concentrated in The Hill. In 2000, the median income for a household in the city was $29,156, and the median income for a family was $32,585. Males had a median income of $31,106; females, $26,987. Per capita income was $18,108. Some 19% of the city's housing units were vacant, and slightly less than half of these were vacant structures not for sale or rent. In 2010, St. Louis's per-capita rates of online charitable donations and volunteerism were among the highest among major U.S. cities. , 91.05% (270,934) of St. Louis city residents age 5 and older spoke English at home as a primary language, while 2.86% (8,516) spoke Spanish, 0.91% (2,713) Serbo-Croatian, 0.74% (2,200) Vietnamese, 0.50% (1,495) African languages, 0.50% (1,481) Chinese, and French was spoken as a main language by 0.45% (1,341) of the population over the age of five. In total, 8.95% (26,628) of St. Louis's population age 5 and older spoke a mother language other than English. Bosnian population About fifteen families from Bosnia settled in St. Louis between 1960 and 1970. After the Bosnian War started in 1992, more Bosnian refugees began arriving and by 2000, tens of thousands of Bosnian refugees settled in St. Louis with the help of Catholic aid societies. Many of them were professionals and skilled workers who had to take any job opportunity to be able to support their families. Most Bosnian refugees are Muslim, ethnically Bosniaks (87%); they have settled primarily in south St. Louis and South County. Bosnian-Americans are well integrated into the city, developing many businesses and ethnic/cultural organizations. An estimated 70,000 Bosnians live in the metro area, the largest population of Bosnians in the United States and the largest Bosnian population outside their homeland. The highest concentration of Bosnians is in the neighborhood of Bevo Mill and in Affton, Mehlville, and Oakville of south St. Louis County. Crime Since 2014 the city of St. Louis has had, , one of the highest murder rate, per capita, in the United States, with 188 homicides in 2015 (59.3 homicides per 100,000) and ranks No. 13 of the most dangerous cities in the world by homicide rate. Detroit, Flint, Memphis, Birmingham, and Baltimore have higher overall violent crime rates than St. Louis, when comparing other crimes such as rape, robbery, and aggravated assault. Despite these high crime rates relative to other American cities, St. Louis index crime rates