Andre's Dog House had current assets of $67764 and current liabilities of $71049 last year. This year, the current assets are $83871 and the current liabilities are $77313. The depreciation expense for the past year is $9869 and the interest paid is $8777. What is the amount of the change in net working capital? Do not use $ or commas in your answer; round to nearest whole dollar (Example: 1234 or -1234)