The following income transition matrix was published by the Slovak Fiscal Council:
Based on the administrative data, here are some facts about income mobility in Slovakia:
70.3% of the top 1% earners stayed in the same income category between 2012 and 2013.
1.6% of employees who were in the bottom decile in 2012 made it into the top quintile.
The probability of moving to the top decile is very similar for all except the top two deciles. Someone in the seventh decile had a slightly lower probability of reaching the top decile than someone in the bottom decile.
People in the fifth (middle) decile were the most mobile.
Only 1% of the employees in the top decile (in 2012) fell into one of the four bottom deciles.
Of course, an even more informative matrix would tell us something about longer horizons.