The balanced merchandise trade database comprises international trade statistics where calculations have been made to reduce the asymmetries between import and export data. Differences arise from valuation (CIF for imports and FOB for exports), in partner country classification, in customs regimes, and in compilation and dissemination methodologies. Detailed statistics reported in different version of the Harmonised System are converted to the Classification of Products by Activity (CPA) products to better align with National Accounts statistics, such as in national Supply-Use tables. Data are expressed in US dollars and are available from 2007 onwards.