<TABLE> <S> <C>
<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from Form 10-K/A
for the year ended December 31, 1999, and is qualified in its entirety by
reference to such financial statements.
</LEGEND>
<RESTATED>
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-START> JAN-01-1999
<PERIOD-END> DEC-31-1999
<CASH> 31,001,354
<SECURITIES> 0
<RECEIVABLES> 128,917,491
<ALLOWANCES> 2,440,544
<INVENTORY> 0
<CURRENT-ASSETS> 187,839,131
<PP&E> 238,189,810
<DEPRECIATION> 103,433,932
<TOTAL-ASSETS> 419,395,841
<CURRENT-LIABILITIES> 94,764,085
<BONDS> 0
0
0
<COMMON> 427,343
<OTHER-SE> 194,959,421
<TOTAL-LIABILITY-AND-EQUITY> 419,395,841
<SALES> 572,741,697
<TOTAL-REVENUES> 572,741,697
<CGS> 0
<TOTAL-COSTS> 369,849,565
<OTHER-EXPENSES> 163,621,773
<LOSS-PROVISION> 151,803
<INTEREST-EXPENSE> 3,669,327
<INCOME-PRETAX> 35,752,835
<INCOME-TAX> 13,850,424
<INCOME-CONTINUING> 21,902,411
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 21,902,411
<EPS-BASIC> 0.52
<EPS-DILUTED> 0.51
</TABLE>