The starting point for that data is 1909, when average life expectancy was under 50 years and child malnourishment was a major problem. The change since 1970 ha

The starting point for that data is 1909, when average life expectancy was under 50 years and child malnourishment was a major problem. The change since 1970 has been much quite modest: http://ers.usda.gov/data-products/charts-of-note/chart-detail?chartId=95869 http://ers.usda.gov/data-products/charts-of-note/chart-detai... Also, you need to adjust for demographics. In 1900, 35% of the population was under 15: https://demographicchartbook.com/index.php/chapter-5-age-and-sex-structure/figure-5-6-percentage-of-the-population-under-15-years-and-elderly-60-or-65-for-the-united-states-by-region-1830-1860-1900-1940-1970-2000-and-2010 https://demographicchartbook.com/index.php/chapter-5-age-and.... Today it’s only 19%. Children and babies obviously eat a lot less meat than adults, and they make up a much smaller share of the population today than back then.