 The size and number of parties each year during Stampede is viewed as an indicator of Calgary's economic strength.Corporations and community groups hold lavish events throughout the city for their staff and clients, while bars and pubs erect party tents, the largest of which draws up to 20,000 people per day.Paul Vickers, who owns several establishments in the city, estimates that he makes up to 20 percent of his annual revenue during the ten days of Stampede alone.