| FEDERAL RETURN DATA |
| STATISTICAL DISTRIBUTION OF AGI, PERSONAL EXEMPTIONS AND FEDERAL TAXES |
| 1999 |
| ALL | SINGLE | HEAD OF | MARRIED | MARRIED |
| | | HOUSEHOLD | JOINT | SEPARATE |
| ADJUSTED GROSS INCOME |
| NUMBER OF NONMISSING VALUES | 909,959 | 389,470 | 83,964 | 423,760 | 12,765 |
| THE MEAN | $40,680 | $18,270 | $24,843 | $64,738 | $29,958 |
| THE SUM | $37,017,171,321 | $7,115,669,217 | $2,085,908,199 | $27,433,181,696 | $382,412,209 |
| THE STANDARD DEVIATION | $173,248 | $131,322 | $44,924 | $215,225 | $161,640 |
| THE UPPER QUARTILE | $50,711 | $23,164 | $30,560 | $71,720 | $33,523 |
| THE MEDIAN | $25,926 | $11,694 | $19,479 | $48,816 | $20,565 |
| THE LOWER QUARTILE | $10,983 | $4,895 | $11,839 | $30,212 | $9,934 |
| THE 90TH PERCENTILE | $79,400 | $38,205 | $45,520 | $103,823 | $49,822 |
| THE 10TH PERCENTILE | $3,982 | $2,052 | $6,584 | $17,408 | $3,886 |
|
|
| PERSONAL EXEMPTIONS |
| NUMBER OF NONMISSING VALUES | 909,959 | 389,470 | 83,964 | 423,760 | 12,765 |
| THE MEAN | 2.21 | 0.73 | 2.54 | 3.53 | 1.45 |
| THE SUM | 2,014,247 | 284,338 | 213,390 | 1,497,969 | 18,550 |
| THE STANDARD DEVIATION | 2 | 1 | 1 | 2 | 1 |
| THE UPPER QUARTILE | 3 | 1 | 3 | 5 | 2 |
| THE MEDIAN | 2 | 1 | 2 | 3 | 1 |
| THE LOWER QUARTILE | 1 | 0 | 2 | 2 | 1 |
| THE 90TH PERCENTILE | 5 | 1 | 4 | 6 | 3 |
| THE 10TH PERCENTILE | 0 | 0 | 2 | 2 | 1 |
|
|
| FEDERAL INCOME TAX |
| NUMBER OF NONMISSING VALUES | 909,959 | 389,470 | 83,964 | 423,760 | 12,765 |
| THE MEAN | $4,909 | $2,147 | $1,754 | $8,090 | $4,325 |
| THE SUM | $4,467,009,268 | $836,354,392 | $147,274,620 | $3,428,175,247 | $55,205,009 |
| THE STANDARD DEVIATION | $43,760 | $25,917 | $11,346 | $58,466 | $32,499 |
| THE UPPER QUARTILE | $4,139 | $2,224 | $1,829 | $6,675 | $3,169 |
| THE MEDIAN | $1,451 | $666 | $219 | $3,192 | $1,459 |
| THE LOWER QUARTILE | $28 | $0 | $0 | $751 | $219 |
| THE 90TH PERCENTILE | $9,249 | $4,444 | $3,973 | $14,333 | $7,024 |
| THE 10TH PERCENTILE | $0 | $0 | $0 | $0 | $0 |