vacancy was lower than that of the Chicago metro area and the US; also, the average gross rent was double that of the area average, suggesting that demand for property was high in the village. The village government incentivizes multiple companies to operate in the village. Because Hines Supply has been the largest sales tax generator in Buffalo Grove, the village created a tax agreement in 2000 that—after being amended a few times—will last until 2040. The agreement requires the village to rebate 60 percent of the total sales tax collected. The village also created a $7 million tax agreement to incentivize the long-awaited and popular Woodman's Markets to open in Buffalo Grove. It attracts shoppers from up to an hour away. The arrival spurred build out on Milwaukee Avenue and is part of Deerfield Parkway's 25 acres of commercial development. Other companies in tax agreements are Business IT Source Inc. and ThermFlo. In 2015, 72.5 percent of residents were in the labor force; the unemployment rate was 3.5 percent, a little lower than Lake County's rate of 5.1 percent. Of those employed in 2015, 15.9 percent worked in Chicago, 5.7 percent worked in Buffalo Grove, and less than 4 percent in Arlington Heights, Schaumburg, and Wheeling. Around 10 percent of those employed in Buffalo Grove lived in Chicago, while 7.4 percent lived and worked in Buffalo Grove. In 2019, the top five employers in Buffalo Grove were Siemens Building Technologies with 1,800 employees, I.S.I (business consulting) at 1,200, ESS (business consulting) at 550, Plexus Corp (an electronic parts supplier) at 370, and Veritas Document Solutions (commercial printer) at 300. Other large employers include US LBM Holdings, LLC (Hines Supply is a subsidiary), the Village of Buffalo Grove, ARxIUM, Vapor Bus International, and Leica Microsystems Inc. Arts and culture The Raupp Museum, operated by the Buffalo Grove Park District, chronicles the town's history, starting with the Potawatomi and ending at the "bustling suburb of today". In 1964, the Raupp brothers donated their land to the Park District with the wish that they make it a library or museum. Dedicated in 1979, the museum regularly receives grants from the state, allowing it to contain and preserve two permanent gallery spaces and changing exhibits while serving around 9,000 visitors a year. In 2014, the Buffalo Grove Park District opened the Community Arts Center, which houses a theater space and classrooms. The Park