At beginning of this year, XYZ Company has a machine worth 1000k, cash 60k, account receivable 80k, inventory 100k, account payable 60k, and notes payable 100k. During this year, XYZ had sold 60k of inventory, pay back 50% of the notes, and have 120k in profit with half cash and half credit. Whats the change of NWC this year?