Latinos nowadays are more likely to be in lower-income households than in 1971, according to a new Pew Research Center analysis of government data.

The change is driven by the increasing share of immigrants in the Hispanic population in the past four decades.

The report also revealed the following about the middle class in America:

• The share of adults in middle-income households has fallen from 61 percent in 1971 to 50 percent in 2015.
• 21 percent of American adults in 2015 were upper income, compared with 14 percent in 1971, a 7-percentage-point increase.
• 29 percent of Americans were low income in 2015, compared with 25 percent in 1971.
• From 1970 to 2014, these households’ median income grew 34 percent, compared to 28 percent among Lower-income household and 47 percent among upper-income household.
• The share of U.S. aggregate household income held by middle-income households has plunged, from 62 percent in 1970 to 43 percent in 2014. Meanwhile, the share held by upper-income households increased from 29 percent to 49 percent.