2018 data was imputed using the 2017 base estimates for cost per asylum seeker and the actual arrival figures for applications for asylum in 2018. While most of these costs remain reasonably consistent year-on-year, Ireland plans to review the methodology as part of the 2019 data preparation process, bringing in new base estimates of costs where available.<br /><br />As the decision process generally takes over 12 months (985 days average), Ireland presumes individuals will remain for at least 12 months. Ireland therefore counts 12 months of support for each individual. Using the average cost per resident for accommodation ensures the most accurate imputation possible given that it is not currently possible to drill down to where each individual is in the process.