Final answer:
The ethnic groups in the US expected to increase in future decades are Hispanics, African Americans, and Asians, according to US Census Bureau projections.
Step-by-step explanation:
The racial or ethnic groups in the United States expected to increase as a percentage of the population over the next few decades include Hispanics, African Americans, and Asians. According to projections by the US Census Bureau, while white Americans composed 78% of the population in 2012, this is expected to decrease to 69% by 2060. Meanwhile, Hispanics are forecasted to constitute a significantly larger share of the population. The Asian population is also growing at a rapid pace, particularly in states like California where the population increased by 31.5% since 2000. Additionally, an increase in workforce diversity is noted due to historical trends, such as women who entered the workforce in the 1970s and 1980s climbing the promotional ladders in their organizations.