A Gallup Poll from October 1988 shows that the more money Americans make, the less sacrificial our giving becomes. Those making less than $10,000 per year give an average of 2.8 percent of their income each year to churches, charities, and other nonprofit organizations. Those making $10,000 to $30,000 give an average of 2.5 percent, those making $30,000 to $50,000 give 2.0 percent, those making $50,000 to $75,000 give a total of only 1.5 percent of their income to their church and all other nonprofit groups.