Clarified Auditing Standards require quantification of materiality levels, which are estimates to guide auditors' decision-making and design of auditing procedures. This estimate is only a guide and is not a specific determination of what is, and is not, material in an audit.
1 The current population of the United States of America is 324,385,585 as of Friday, August 12, 2016, based on the latest United Nations estimates.  the United States population is equivalent to 4.38% of the total world population.
In October 1990, the Census Bureau issued estimated U.S. population figures of approximately 254 million, based on a tracking of birth, death, and immigration records.