Usage
    normalize_population(data, harmonized_population)
 
     
    
    Arguments
- data
 
Tidy dataset with columns period_start_date, period_end_date
iso_3166_2.
 
- harmonized_population
 
Harmonized population data with
columns date, iso_3166_2, and population (other columns will be dropped).
 
 
    
    Value
    Tidy dataset joined with harmonized population.