The data-sets for each of the provinces were created over a long period (of over ten years) by different researchers, and were initially not planned to be incorporated in a single internet publication. Unsurprisingly, they differed in the way that data was structured and categorized, and it took some work to reach a satisfactory compromise.
The user can search for amounts per year for revenue and expenditure items as they appear in the preserved sources for the various provinces. Moreover, the user can make selections of subsets of data. All of the data can be exported in CSV files.