Documentation for the Twentieth Century Crop Statistics, 1900-2017

This document outlines the methodology and data sets used to construct the Twentieth Century Crop Statistics, 1900-2017, along with limitations, and use constraints. It consists of national or subnational maize and wheat production, yield, and harvested area statistics for all available years from 1900-2017. The Twentieth Century Crop Statistics combines a new digitization of crop statistics from Italy, Spain, Indonesia, China, Mexico, Uruguay, Chile, Sweden, and Morocco with existing, publicly available, digitized data sets from India, Australia, the United States, Canada, Southern Brazil, Argentina, England, Austria, Belgium, Croatia, Czech Republic, Finland, Germany, Spain, Portugal, France, the Netherlands, and South Africa. The data provides a unique crop yield data set that spans the twentieth century for many of the world’s major bread baskets.