Table 2.

Exported product sections.

$1^{\mathit{st}}$ column: product section names; $2^{\mathit{nd}}-3^{\mathit{rd}}$ columns: which 2-digit products and how many 6-digit products are included. $4^{\mathit{th}}-5^{\mathit{th}}$ columns: number of nodes and edges in the network of Fig. 3. The percentages between parenthesis are computed with respect to the total values reported in the final line. Note that product 999999: Commodities not specified according to kind is not included.