Definition of average wage from the source (OECD):
>"Average wages are obtained by dividing the national-accounts-based [e.g. GDP] total wage bill by the average number of employees in the total economy, which is then multiplied by the ratio of the average usual weekly hours per full-time employee to the average usually weekly hours for all employees. This indicator is measured in USD constant prices using 2016 base year and Purchasing Power Parities (PPPs) for private consumption of the same year."