The United States Census Bureau is a good resource for population data of the U.S. and the world. Go to the U.S. Census World Population Clocks POPClocks website http://www.census.gov/popclock/. There you will see the current world population. What do you think? Does it seem too big or maybe too small? The table below depicts historical estimates prior to 1950 and then historic data after 1950 regarding the world population (in Billions) and the world growth rate percentage. 1. Review the following table. Remember the population data is in billions Year (AD) Population in Billions 1 0.17 400 0.19 800 1200 1600 1800 1850 1900 1950 1960 1970 1980 1990 2000 2010 2020 2030 2040 2050 0.22 0.36 0.55 0.81 1.13 1.55 2.56 3.04 3.71 4.45 5.28 6.08 6.86 7.64 8.33 8.92 9.40 Growth Rate (%) N/A N/A N/A N/A N/A N/A N/A N/A 1.458 1.348 2.091 1.831 1.575 1.252 1.129 0.976 0.758 0.598 N/A