The table below shows the percentage shares of total national income received by each quintile (20% bands) of households in an economy for the years 2016 and 2023.
| Household Income Quintile | Share of National Income in 2016 (%) | Share of National Income in 2023 (%) |
|---|---|---|
| Lowest 20% | 7.5 | 5.2 |
| Second 20% | 12.5 | 10.3 |
| Third 20% | 17.0 | 15.5 |
| Fourth 20% | 23.0 | 22.0 |
| Highest 20% | 40.0 | 47.0 |
Based on this data, which of the following statements must be correct?
The absolute household income of the lowest quintile decreased between 2016 and 2023.
The Gini coefficient for income distribution was higher in 2023 than in 2016.
The distribution of national wealth became more equal over the seven-year period.
The mean household income of all quintiles must have increased due to economic growth.
