A firms balance sheets for the last two years are as follows:

Year 2019

Assets Liabilities and Equity

Cash $ 9,000 Accounts payable $12,000

Market securities 10,000 Accruals 10,000

Accounts receivable 21,000 Current bank note 10,000

Inventory 20,000 Long-term debt 30,000

Plant 40,000 Common stock 14,000

Retained earnings 24,000

$100,000 $100,000

Year 2020

Assets Liabilities and Equity

Cash $12,000 Accounts payable $12,000

Market securities 18,000 Accruals 10,000

Accounts receivable 18,000 Current bank note 30,000

Inventory 10,000 Long-term debt 10,000

Plant 42,000 Common stock 18,000

Retained earnings 20,000

$100,000 $100,000

Sales in 2019 were $500,000. Sales in 2020 were $500,000.

If the firm bought $4,000 in new plant, what was the implied depreciation expense during 2020?