Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Combination stacked bar chart and line chart showing contributors to agricultural productivity according to economic business cycles, starting with 1948–53 and ending with 2007–19.
