English example sentences with "underestimation"

Today, about 2% of the Philippines are Buddhists, but I surmise that it may be a great underestimation. I surmise also that many of these Buddhists are of the Chinese ethnic persuasion. There are reportedly also Syncretists who worship both Buddhist and Roman Catholic elements.
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The report estimates the number of women living with fistula in sub-Saharan Africa at two million. But Dr. France Donnay of the U.N. Population Fund says the figure is probably a "gross underestimation."
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