There has been debate in Australia about whether income in is increasing. Using annual income data, a range of studies suggested that income in increased in the 1980s. Using weekly income data, Harding found that income in had remained stable between 1982 and 1993–94, and between 1982 and 1996–97. However, it has since emerged that there may be major problems with the weekly income data collected in the 1982 Income Survey, so that there are now doubts about the reliability of results based on this data.