There are two missions of this site. The first is to make available to the public the highest quality and most reliable historical data on important economic aggregates, with particular emphasis on nominal (current-price) measures, as well as real (constant-price) measures. The data presented here on the United States, the United Kingdom and Australia, have been created using the highest standards of the fields of economics and history, and they were rigorously refereed by the most distinguished researchers in the fields. The second is to provide carefully designed comparators (using these data) that explain the many issues involved in making value comparisons over time.
