code: private static void addMinistryPerYearToMap(final String name,
  			final Map<Integer, List<GovernmentBodyAnnualSummary>> map, final HSSFSheet mySheet) {
  		if (mySheet.getSheetName().chars().allMatch(Character::isDigit)) {
  
  			final int year = Integer.parseInt(mySheet.getSheetName());
  
  			final List<GovernmentBodyAnnualSummary> yearList = new ArrayList<>();
  			final Iterator<Row> rowIterator = mySheet.iterator();
  
  			// Skip header row, ignore first
  			rowIterator.next();
  
  			while (rowIterator.hasNext()) {
  				addGovernmentBodyAnnualSummaryToList(name, year, yearList, rowIterator.next());
  			}
  			map.put(year, yearList);
  		}
  	}
docs: Adds the ministry per year to map.
  
  @param name
  the name
  @param map
  the map
  @param mySheet
  the my sheet