Enterprises, Economic Performance and Employment. Inland Waterway Transport. Total amount invoiced by the IWT enterprise during the period under review. This total corresponds to market sales of goods or services supplied to third parties. Turnover includes all duties and taxes on the goods or services invoiced by the enterprise with the exception of VAT invoiced by the unit vis-a-vis its customers. It also includes all other charges to customers. Reductions in prices, rebates and discounts as well as the value of returned packing must be deducted, but not cash discounts. Turnover does not include sales of fixed assets. Operating subsidies received from public authorities are also excluded. Maritime Transport. Total amount invoiced by an enterprise during the period under review. This total corresponds to market sales of services or goods supplied to third parties. Included in turnover is "other operating income" e.g. income from concessions, patents, trademarks and similar values. Turnover includes all duties and taxes on the goods or services invoiced by the enterprise with the exception of VAT invoiced by the enterprise vis-à-vis its customers. It also includes all other charges to customers. Reductions in prices, rebates and discounts as well as the value of returned packing must be deducted, but not cash discounts. Turnover includes only ordinary activities and hence does not include sales of fixed assets. Operating subsidies received from public authorities, including the institutions of the European Union, are also excluded. Oil Pipeline Transport. Total amount invoiced by the oil pipeline transport enterprise during the period under review. This corresponds to market sales of goods or services supplied to third parties. Turnover includes all duties and taxes on the goods or services invoiced by the enterprise with the exception of VAT invoiced by the unit vis-à-vis its customers. It also includes all other charges to the customers. Reductions in prices, rebates and discounts must be deducted, but not cash discounts. Turnover does not include sales of fixed assets. Operating subsidies received from public authorities are also excluded. Railway Transport. Total amount invoiced by a railway body during the period under review. This corresponds to market sales of goods or services supplied to third parties. Turnover includes all duties and taxes on the goods or services invoiced by the body with the exception of VAT invoiced by the unit vis-à-vis its customers. It also includes all other charges to the customers. Reduction in prices, rebates and discounts as well as the value of returned packing must be deducted, but not cash discounts. Turnover does not include sales of fixed assets. Operation subsidies received from public authorities are also excluded. Road Transport. Total amount invoiced by the road transport enterprise during the period under review. This corresponds to market sales of goods or services supplied to third parties. Turnover includes all duties and taxes on the goods or services invoiced by the enterprise with the exception of VAT invoiced by the unit vis-a-vis its customer. It also includes all other charges ascribed to the customer. Reduction in prices, rebates and discounts as well as the value of returned packing must be deducted, but not cash discounts. Turnover does not include sales of fixed assets. Operating subsidies received from public authorities are also excluded