Historical demand for a product is given below. The regression equation for forecasting isy $=201\mathrm{.}67-9\mathrm{.}86$x $($where x is time$).$ What is the forecast for September? $($carry to $2$ decimal places$)$ Time $123456$ Month January February March April May June Demand $192\mathrm{.}00181\mathrm{.}00174\mathrm{.}00161\mathrm{.}00152\mathrm{.}00143\mathrm{.}00$