Percentiles affected by errors in the estimation of interfractile average incomes, 1917–2011
| Errors | Number |
|---|---|
| 90–95>95 | 221 |
| 95–99>99 | 1 |
| 99–99.5>99.5 | 14 |
| 99.5–99.9>99.9 | 5 |
| 99.9–99.99>99.99 | 3 |
Note: This table does not include errors reported in Table A2.
Source: Authors’ analysis of state-level tax data from Sommeiller (2006) extended to 2011 using state-level data from the Internal Revenue Service SOI Tax Stats (various years), and Piketty and Saez (2012)