based on the given annual usage $($units produced$)$ as shown below.

Thunderbird Manufacturing

Units$-$of$-$Production Depreciation Schedule

Stamping Machine

$\backslash$table$[[$End of Year,Depreciation per Unit $($$$),$Units Produced,Annual Depreciation $($$$),$Accumulated Depreciation $($$$),$Book value $($$$)],[4,,,,,$$$40,000($new$)],[4,$$$,50,000,$$$,$$$,$$$1$