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<TABLE> <S> <C>
<ARTICLE> 5
<S> <C> <C> <C>
<PERIOD-TYPE> 3-MOS 6-MOS 9-MOS
<FISCAL-YEAR-END> DEC-31-2000 DEC-31-2000 DEC-31-2000
<PERIOD-START> JAN-01-2000 APR-01-2000 JUL-01-2000
<PERIOD-END> MAR-31-2000 JUN-30-2000 SEP-30-2000
<CASH> 950 873 871
<SECURITIES> 0 0 0
<RECEIVABLES> 65,493 65,213 67,900
<ALLOWANCES> (6,561) (5,942) (5,863)
<INVENTORY> 0 0 0
<CURRENT-ASSETS> 75,016 74,615 78,055
<PP&E> 291,025 306,571 325,504
<DEPRECIATION> (122,011) (124,511) (126,715)
<TOTAL-ASSETS> 258,721 271,386 291,966
<CURRENT-LIABILITIES> 72,901 59,286 61,741
<BONDS> 0 0 0
0 0 0
0 0 0
<COMMON> 831 831 831
<OTHER-SE> 112,534 117,110 121,403
<TOTAL-LIABILITY-AND-EQUITY> 258,721 271,386 291,966
<SALES> 112,799 120,144 122,385
<TOTAL-REVENUES> 112,799 120,144 122,385
<CGS> 0 0 0
<TOTAL-COSTS> 108,076 111,529 114,125
<OTHER-EXPENSES> 9 80 (50)
<LOSS-PROVISION> 0 0 0
<INTEREST-EXPENSE> 899 1,033 1,273
<INCOME-PRETAX> 3,815 7,502 7,037
<INCOME-TAX> 1,488 2,926 2,744
<INCOME-CONTINUING> 2,327 4,576 4,293
<DISCONTINUED> 0 0 0
<EXTRAORDINARY> 0 0 0
<CHANGES> 0 0 0
<NET-INCOME> 2,327 4,576 4,293
<EPS-BASIC> 0.28 .55 .52
<EPS-DILUTED> 0.28 .55 .52
</TABLE>
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