Since 1980, wage inequality in the United States has increased substantially. According to the U.S. Census Bureau, income received by the top 20 percent of households rose from 44 percent of total aggregate income in the economy in 1980 to 51 percent in 2016, whereas the income received by the bottom 20 percent of households fell from 4.2 percent to 3.1 percent. Using the logic of marginal revenue product, give an explanation for this change in the distribution of income. In your explanation, you may want to consider the rise of the high-technology, high-skill sector and the decline of industries requiring low-skill labor.