The following table shows the past two years of quarterly sales information. Assume that there are both trend and seasonal factors and that the seasonal cycle is one year QUARTER 1 2 3 4 5 6 7 SALES 161 191 158 136 217 234 210 170 Use time series decomposition to forecast quarterly sales for the next year. (Do not round Intermediate calculations. Round your answers to the nearest whole number) Forecast Quarter 9 10 11 12