XO Manufacturing's sales budget showed the following projections, by quarter, for the next six quarters:

Quarter$1$st $20212$nd $20213$rd $20214$th $20211$st $20222$nd $2022$

Units$12,00013,00015,00016,00015,00014,000$

Inventory on December $31$ of $2020$ is expected to be $2,400$ units.$$

The quantity of finished goods inventory at the end of each quarter is to equal$$

$20\%$ of the next quarter's budgeted units to be sold.

Required:$$ Prepare a Production Budget for XO for $2021$ showing each quarter and the year.