The Simon Abundance Index (SAI) measures the relationship between resource abundance and population size. It converts the abundance of 50 basic commodities per capita and the size of the global population into a single value. The index began in 1980 with a base value of 100. In 2024, the SAI was 618.4, meaning that resources have become 518.4% more abundant over the past 44 years. All 50 commodities in the dataset were more abundant in 2024 than in 1980. Global resource abundance grew at a cumulative annual growth rate of 4.22%, doubling every 17 years.