Percentiles affected by errors in the estimation of interfractile average incomes at the state level, 1917–2015
| Errors | Number |
|---|---|
| P90–95 > P95 | 242 |
| P95–99 > P99 | 4 |
| P99–99.5 > P99.5 | 15 |
| P99.5–99.9 > P99.9 | 5 |
| P99.9–99.99 > P99.99 | 4 |
Note: This table does not include errors reported in Table A2.
Source: Authors’ analysis of state-level tax data from Sommeiller 2006 extended to 2015 using state-level data from the Internal Revenue Service SOI Tax Stats (various years) and Piketty and Saez 2016