Some figures for a number of countries and commodities require explanations or qualifications for their proper interpretation. Cases in which international comparability over the years covered in the yearbook cannot be achieved are indicated. Also noted are significant differences between customs area and geographic area for individual countries as well as variations in statistical coverage of external trade. Standard tapes contain all time series reported for trade in agricultural products and trade in agricultural requisites. Each annual time series on standard tape starts with the year 1961 and runs through the latest year published in the Trade Yearbook.
Prices are subject to revision.
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