The university also houses Missoula's only business incubator, the Montana Technology Enterprise Center, and several start-up businesses. The Missoula is the hub of its Bureau of Economic Analysis (BEA) economic area, which includes the Montana counties of Flathead, Lake, Lincoln, Mineral, Missoula, Ravalli, and Sanders. , the BEA listed the economic area population at 306,050. Key businesses sectors serving the area include health care, retail shopping, transportation, financial services, government and social services, education, events, arts and culture. Health care in particular is one of Missoula's fastest growing industries with St. Patrick Hospital (western Montana's only level-II trauma center) and the Community Medical Center, already the city's second- and third-largest employers behind the university. About 55% of employment in Missoula is made up of the service and retail sectors. Export industries are concentrated in heavy and civil engineering, construction, beverage production, technical services, truck transportation, and forestry-, logging-, and wood-related industries. In addition to nearly 4million out-of-state visitors annually, which makes tourism a significant aspect of the Missoula economy, Missoula also is home to a vibrant sector of alternative healthcare. , Missoula ranked 299 nationally in gross metropolitan product with an output of $5billion, the city's total personal income ranked 333 at $4.18billion, an increase of more than 47% since 2003. , per capita personal income ranked 239 at $37,397 a year, 84% of the national average. The Missoula metropolitan area's unemployment rate was 3.7% , dropping nearly 0.8% in the twelve months prior. Missoula, often considered the cultural center of Montana, is the location of the state's first university, and an eclectic mix of loggers, hippies, college students, sports fans, and retirees. Community events generally take place downtown either outdoors or in one of the several downtown buildings listed on the National Historic Registry. Since 2006, the River City Roots Festival has been an event each August with music, beer, food, and art, and generally attracts crowds of 15,000. The longest-standing event downtown has been the Missoula Farmers Market that was founded in 1972, which provides an outlet for Western Montana produce on Saturday mornings from May to October as well as Tuesday evenings from July to early September. An arts and crafts People's Market and a Clark Fork Market run concurrently. Downtown hosts "First Friday Missoula", a gallery walk on the first Friday of the month to feature local art from museums and galleries, such as that of Monte Dolack.