According to the website, "the database provides access to codes of ethics for U.S. companies and trade and professional associations, ethics sites at college and university business programs, industry information resources, and company promotion of social responsibility covering such topics as arts assistance, environmental clean up, charitable giving and community programming (from University of Colorado at Boulder).
The Internal Revenue Service (IRS) offers statistical data about income through their Statistics of Income (SOI) program. This program covers statistics on Business Tax, Charitable, Compliance, and Individual Tax. It also allows a user the ability to search IRS statistics by IRS form number (ex. 1040).