Regards! I would like to know if there is a quick way to estimate (or forecast) missing data? I am using data from the Barro-Lee education data set which only goes every five years. Thus, I estimated using linear interpolation (Ipolate command). The estimates seem fair; however, the last 9 estimated observations (2011 to 2019) seem too steep ( the trend seems too steep). So, I was wondering if there is a quick way to forecast (or estimate) this missing data in STATA other than the Ipolate command? See some pictures below Array