line.title = _('Base Period Cumulative Efficiency') + ' / ' \
                    + _('Reporting Period Cumulative Efficiency') + ' - ' \
                    + reporting_period_data['names'][i] + "-" \
                    + reporting_period_data['denominator_names'][i] \
                    + " (" + reporting_period_data['denominator_units'][i] + ")"