private Dictionary <Category, decimal> getAverageSpendingByCategory(FinanceDb db, DateTime startDate, DateTime endDate)
{
var report = new AverageMonthlySpendingByCategory();
report.DateFrom = startDate;
report.DateTo = endDate;
report.Run(db);
return(report.Data.ToDictionary(ca => ca.Category, ca => ca.Amount));
}
