Two-thirds of lower-income adults in the U.S. say they worry a great deal about hunger and homelessness, up from 51% in 2010-2011, and much greater than worry among higher-income groups.

Since 2001, worry has been highest among those residing in lower-income households, likely because those with limited financial resources are more at risk of going hungry or becoming homeless. A consistent majority of lower-income adults worried about the problem before 2012, but that has only increased in the past five years. Concern among middle-income Americans in 2016-2017 falls just short of the majority level at 47%, while 37% of upper-income Americans are worried.

Rising concern among all income groups could be a result of the political and media attention devoted to U.S. income inequality in recent years. Americans may also worry more about hunger and homelessness when other issues are not dominating the national consciousness, such as the economy and budget deficit were in 2010-2011 and terrorism was in the years after 9/11.

Overall, 47% of Americans now worry about hunger and homelessness “a great deal,” according to Gallup’s March 1-5 survey, tied with 2016 as the high in the trend. Previously, concern had been as low as 35% in 2004 and as high as 45% in 2001, the first year Gallup asked the question.

Read more: Worry About Hunger, Homelessness Up for Lower-Income in US | Gallup