WINDHOEK, Feb 11 (Reuters) - Debt-laden, state-owned Air Namibia has been placed under voluntary liquidation, Finance Minister Iipumbu Shiimi said on Thursday. Shiimi told reporters at a news conference that it was in the best interest of the country to file for liquidation. The government said it would pay airline employees the value of one year’s salary, over the next 12 months. (Reporting by Nyasha Nyaungwa; Writing by Tanisha Heiberg; Editing by Edmund Blair)