The popularity of owning and operating a business continues to grow, new research finds.  There are now 24 million entrepreneurs in the United States, which represents 14 percent of the working-age population — the highest rate recorded since 1999, according to a study from Babson College.

Overall, 36 percent of entrepreneurs operate in the business service sector, which includes knowledge and service-based businesses, while 9.4 percent are starting medium- or high-technology businesses.

The research also revealed that 6.5 percent of entrepreneurs are starting businesses within organizations, which the study’s authors said is an indication that entrepreneurial initiatives within larger corporate environments coexist alongside independent startups.