# How to forecast a very small time serie (26 observations)? [duplicate]

I need help to predict future values for a time series (26 observations of consumer prices). This time series is not stationary (i.e I have increasing values of price). What is the best method knowing that I want to take the time series to it original scale at the end?

For now, I run this code on stata. But, all my future values are decreasing which is a non sense. So, i'm probably

tsappend, add(20)