As an input takes the number of unique municipalities in the data and as an output gives the years on which this was the number of municipalities. Can be used to give a warning if the number of municipalities in the data does not match the year of the regionkey used.
As an input takes the number of unique municipalities in the data and as an output gives the years on which this was the number of municipalities. Can be used to give a warning if the number of municipalities in the data does not match the year of the regionkey used.