Cash Flow Data for Interceptors, Incorporated.

$2018201920202021$

Beginning Cash $ $35$ $ $40$ $ $45$ $ $50$

Cash from Operations $ $127$ $ $125$ $ $122$ $ $117$

Net Capital Spending $($$ $140)($$ $130)($$ $140)($$ $145)$

Cash from Financing $ $18$ $ $15$ $ $23$

Ending Cash $ $40$ $ $45$ $ $50$ $ $55$

What must cash flow from financing have been in $2021$ for Interceptors, Incorporated?