* @throws IOException
*/
private void drawBalanceSum(Graphics2D g2d, ITradingOffice office,
BufferedImage coin, int y) throws FontFormatException, IOException {
int lastWeek =0;
IBalanceSheet bal = office.getBalanceLastWeek();
lastWeek += bal.getOtherCosts() + bal.getPropertyTaxes() + bal.getStewardCost() + bal.getWageCosts();
lastWeek -= (bal.getOfficeTrading() + bal.getRentalIncome());
int forcast = 0;
bal = office.getCurrentWeek();
forcast += bal.getOtherCosts() + bal.getPropertyTaxes() + bal.getStewardCost() + bal.getWageCosts();
forcast -= (bal.getOfficeTrading() + bal.getRentalIncome());
drawBalanceRow(g2d, coin, y, lastWeek, forcast);
}