context: Retailers, sporting goods makers, and other businesses benefit from extra afternoon sunlight, as it induces customers to shop and to participate in outdoor afternoon sports. In 1984, Fortune magazine estimated that a seven-week extension of DST would yield an additional $30 million for 7-Eleven stores, and the National Golf Foundation estimated the extension would increase golf industry revenues $200 million to $300 million. A 1999 study estimated that DST increases the revenue of the European Union's leisure sector by about 3%.
question: 1999లో చేసిన ఒక అధ్యయనం ప్రకారం, పగటి పొదుపు మూలంగా యూరోపియన్ యూనియన్లో విరామ పరిశ్రమ ఆదాయం ఎంత శాతం పెరిగింది?
answers: 3%