By Reuters Staff 3 Min Read HONG KONG, Jan 27 (Reuters) - Hong Kong private home prices, among the most expensive in the world, eked out a tiny gain in 2020 amid the coronavirus pandemic, data showed on Wednesday, barely extending a run of increases dating back to 2009 when prices were only a third of the current level. According to preliminary property index data though could yet be revised downward, prices grew by a fraction last year, giving a December index reading of 379.3 versus 379.2 for 2019. Home prices in the Asia financial hub have been resilient despite the social unrest in 2019 and COVID-19 outbreak in 2020, supported by robust demand and low interest rates.