Hello, I am trying to set up data to run a time series analysis over a decade of data. When setting up the "year" variable to be accepted for a time series analysis I have received the error message "repeated time values in sample". This is correct in the sense that every there is a 2001 data for every country, and a 2002 for every country and so on. Is there a way to work with this data so that I can run time series data over values for each country, and then run a larger aggregate time series analysis over all the countries?