<ARTICLE> 5
<MULTIPLIER> 1,000

                                                  
<PERIOD-TYPE>                   12-MOS                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1998             DEC-31-1999
<PERIOD-START>                             JAN-01-1998             JAN-01-1999
<PERIOD-END>                               DEC-31-1998             DEC-31-1999
<CASH>                                          11,869                  10,456
<SECURITIES>                                         0                       0
<RECEIVABLES>                                   44,527                  36,832
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<PP&E>                                          98,353                 116,369
<DEPRECIATION>                                (38,600)                (44,081)
<TOTAL-ASSETS>                                 177,246                 179,463
<CURRENT-LIABILITIES>                           33,607                  24,791
<BONDS>                                              0                       0
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<PREFERRED>                                          0                       0
<COMMON>                                           172                     172
<OTHER-SE>                                     141,740                 152,452
<TOTAL-LIABILITY-AND-EQUITY>                   177,246                 179,463
<SALES>                                        177,642                 156,368
<TOTAL-REVENUES>                               177,642                 156,368
<CGS>                                          118,923                 106,419
<TOTAL-COSTS>                                  152,184                 138,694
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<INTEREST-EXPENSE>                             (1,197)                   (440)
<INCOME-PRETAX>                                 26,655                  18,114
<INCOME-TAX>                                     9,228                   6,349
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<DISCONTINUED>                                       0                       0
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<NET-INCOME>                                    17,427                  11,765
<EPS-BASIC>                                       1.01                    0.68
<EPS-DILUTED>                                     1.01                    0.68