Trade share by type of trade (OWID calculations based on NBER- United Nations Trade Data 1962-2000)

The total value of exports calculated for the NBER-United Nations Datasets includes only trade in goods, classified according to the 4 digit Standard International Trade Classification, Revision 2. Authors give primacy to importers' reports whenever they are available, assumed to be more accurate.

OWID calculations have excluded all observations for the 'World' with the focus on bilateral country trade flows. Countries Comoros, Saint Kitts and Nevis, and the Netherlands Antilles have also been excluded from the sample as, in the case of the former two, multiple countries are included in these labels in the NBER-UN data, and hence would be inaccurate to calculate the trade share by national GDP. For the Netherlands Antilles there is insufficient alternative trade data by the World Bank and other sources to check whether the figures are correctly estimated. ...