<ARTICLE>                     5

                                                                       
<PERIOD-TYPE>                       3-Mos          3-Mos           3-Mos           3-Mos
<FISCAL-YEAR-END>                  Dec-31-1999     Dec-31-1999     Dec-31-1999     Dec-31-1999
<PERIOD-START>                     Jan-01-1999     Apr-01-1999     Jul-01-1999     Oct-01-1999
<PERIOD-END>                       Mar-31-1999     Jun-30-1999     Sep-30-1999     Dec-31-1999
<CASH>                                   1,401           3,694             917           3,176
<SECURITIES>                                 0               0               0               0
<RECEIVABLES>                           19,296          23,757          26,849          27,677
<ALLOWANCES>                               685             666           1,358             921
<INVENTORY>                              1,439           1,548           1,759           1,624
<CURRENT-ASSETS>                        24,080          32,269          32,321          35,483
<PP&E>                                 106,906         125,313         127,559         138,523
<DEPRECIATION>                           5,057           5,405           5,887           5,949
<TOTAL-ASSETS>                         192,662         228,301         229,956         249,204
<CURRENT-LIABILITIES>                   16,529          21,950          21,064          27,668
<BONDS>                                110,191         131,859         129,486         137,363
<PREFERRED-MANDATORY>                        0               0               0               0
<PREFERRED>                                  0               0               0               0
<COMMON>                                42,255          46,711          46,711          46,700
<OTHER-SE>                              14,919          17,983          20,938          23,441
<TOTAL-LIABILITY-AND-EQUITY>           192,662         228,301         229,956         249,204
<SALES>                                 47,537          52,855          56,471          57,856
<TOTAL-REVENUES>                        47,537          52,855          56,471          57,856
<CGS>                                   29,336          33,193          35,662          36,553
<TOTAL-COSTS>                           41,485          46,258          49,995          50,933
<OTHER-EXPENSES>                             0               0               0               0
<LOSS-PROVISION>                             0               0               0               0
<INTEREST-EXPENSE>                       1,811           2,123           2,316           2,403
<INCOME-PRETAX>                          4,528           4,864           4,694           5,038
<INCOME-TAX>                             1,676           1,799           1,739           1,886
<INCOME-CONTINUING>                      2,852           3,065           2,955           3,152
<DISCONTINUED>                               0               0               0               0
<EXTRAORDINARY>                              0               0               0               0
<CHANGES>                                    0               0               0               0
<NET-INCOME>                             2,852           3,065           2,955           3,152
<EPS-BASIC>                               0.21            0.22            0.21            0.23
<EPS-DILUTED>                             0.21            0.22            0.21            0.22