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.
U.S. population at the beginning of 2017 was over 324 million. 1 U.S. population is growing by over 2,000,000 people per year -- that's 240 per hour -- about half from new births and half from immigration. 1 According to a Global Footprint Network data, the U.S. can sustain a population of only about 150 million at a reduced consumption level similar to Europeans. 2