<ARTICLE> 5
       
                                                                       
<PERIOD-TYPE>                   12-MOS                   12-MOS                   12-MOS
<FISCAL-YEAR-END>                          MAR-31-1996             MAR-31-1997             MAR-31-1998
<PERIOD-START>                             APR-01-1995             APR-01-1996             APR-01-1997
<PERIOD-END>                               MAR-31-1996             MAR-31-1997             MAR-31-1998
<CASH>                                               0              15,665,000               8,430,000
<SECURITIES>                                         0                       0                       0
<RECEIVABLES>                                        0              23,980,000              27,715,000
<ALLOWANCES>                                         0               1,686,000               2,082,000
<INVENTORY>                                          0                       0                       0
<CURRENT-ASSETS>                                     0              39,829,000              37,175,000
<PP&E>                                               0              25,845,000              33,892,000
<DEPRECIATION>                                       0              12,745,000              17,350,000
<TOTAL-ASSETS>                                       0              58,824,000              60,491,000
<CURRENT-LIABILITIES>                                0              11,233,000              12,449,000
<BONDS>                                              0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                             0              18,661,000               8,888,000
<OTHER-SE>                                           0              27,426,000              36,883,000
<TOTAL-LIABILITY-AND-EQUITY>                         0              58,824,000              60,491,000
<SALES>                                              0                       0                       0
<TOTAL-REVENUES>                           109,052,000             121,704,000             141,709,000
<CGS>                                                0                       0                       0
<TOTAL-COSTS>                               97,043,000             107,968,000             126,582,000
<OTHER-EXPENSES>                                     0                       0                       0
<LOSS-PROVISION>                                     0                       0                       0
<INTEREST-EXPENSE>                                   0                       0                       0
<INCOME-PRETAX>                             12,009,000              13,736,000              15,127,000
<INCOME-TAX>                                 4,684,000               5,220,000               5,670,000
<INCOME-CONTINUING>                          7,325,000               8,516,000               9,457,000
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                 7,325,000               8,516,000               9,457,000
<EPS-PRIMARY>                                     1.65                    1.86                    2.26
<EPS-DILUTED>                                     1.57                    1.82                    2.21