Total earned income from employment and business consist of income from employment and income from business.
Mean value 1 - Average value for all.
Mean value 2 - Average value for all with income.
Percentiles - The value that delimit the first 10 per cent of the population is called P10. The value that delimit the top 10 per cent of the population is called P90. The value in the middle, P50, is even called the median value.
The Gini-coefficient can be a value between 0 and 1. A high level of the coefficient present a larger uneveness than a low level.