What percentage of world output was being exported to other countries at the very end of the twentieth century?

Name: What percentage of world output was being exported to other countries at the very end of the twentieth century?
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At the very end of the twentieth century, nearly 20 percent of world output was being exported to other countries. This reflects the significant increase in globalization and international trade during the latter half of the 20th century.

What Percentage of World Output Was Being Exported to Other