World Trade Flows, 1980-1997

<p>These data concern bilateral trade flows in the world. The data are based on the database called World Trade Analyzer (WTA) assembled by Statistics Canada, which contains bilateral trade flows for all countires over 1980-1997, classified according to the Standard International Trade Classification, Revision 2 (with some modification). The main source for the bilateral trade data is the United Nations Statistical Office., which collects the trade data from individual countries, providing them with an international trade classification into which they are to fit their own national systems as best they can. The United Nations (UN) then publishes these data in summary form in the Yearbook of International Trade Statistics and in the full reported detail in Commodity Trade Statistics, but does not attempt to supplement the reported data or make them consistent across countries or years.</p>
<p>Statistics Canada has recompiled the UN trade data on a consistent basis, using a version of the Standard Intemational Trade Classification (SITC) Revision 2, modified to match Canadian trade and industry classifications and to accommodate some of the variation in the way countries report their data.</p>

本数据集涵盖全球双边贸易流量。本数据集基于加拿大统计局汇编的《世界贸易分析器（World Trade Analyzer, WTA）》数据库，该库包含1980-1997年全球所有国家的双边贸易流量数据，按《标准国际贸易分类（Standard International Trade Classification, SITC）修订2版》进行分类（存在部分调整）。双边贸易数据的主要来源为联合国统计司：该机构从各成员国收集贸易数据，并为各国提供国际贸易分类标准，以便各国尽可能将本国贸易体系适配该分类体系。联合国随后将数据以摘要形式发布于《国际贸易统计年鉴》，并以详细报告形式发布于《商品贸易统计》，但不会对上报数据进行补充，也不会统一各国或各年度数据的一致性。

加拿大统计局以统一标准对联合国贸易数据进行了重新编译，采用了适配版本的《标准国际贸易分类（SITC）修订2版》，调整该分类以匹配加拿大贸易与行业分类体系，并兼容各国在数据报告方式上存在的部分差异。