In the market for silver bracelets, the supply curve is the typical upward-sloping straight line, and the demand curve is the typical downward-sloping straight line. The equilibrium quantity in the market for widgets is 200 per month when there is no tax. Then a tax of $5 per bracelet is imposed. As a result, the government is able to raise $800 per month in tax revenue. We can conclude that the equilibrium quantity of bracelets has fallen by ________________.