Reflecting the changing rates of "world output," the United States' share of world output (by percentage), from 1960 to "today" (as per the text), move as follow Reflecting the changing rates of "world output," the United States' share of world output (by percentage), from 1960 to "today" (as per the text), moved as follows.

The world economy has undergone a reglobalization process since World War II, accelerating the integrative trend that World War I and the existing economic and political chaos have abruptly aborted. The growth of the world economy was faster between 1950 and 1973 than before 1914 and its geographical reach was much greater, marking the beginning of a golden age of prosperity.

Explanation:

In part of the world exports corresponding to the European Union, the United States and Japan fell between 1980 and 2011. The participation of the European Union decreased from 37% to 30%, that of the United States from 11% to 8% and the from Japan from 6% to 5%. An important fact is the contribution of the United States to world imports that participate little, from 12% in 1980 to 13% in 2011. The United States contributed to a strong growth (5.0%) of imports in 2018. In figures in 2017, the United States exported $1.25 billion and imported $2.16 billion.