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.
The horizontal axis displays the articles (records) in chronological order of analysis. The vertical axis displays the percentage of the 12 (plus 1 unspecified) determinant categories containing at least one determinant. The labels describe which determinant category appeared for the first time in which record.
