<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<MULTIPLIER> 1,000
<S> <C> <C> <C> <C>
<PERIOD-TYPE> YEAR YEAR YEAR 6-MOS
<FISCAL-YEAR-END> DEC-31-1997 DEC-31-1998 DEC-31-1999 JUN-30-2000
<PERIOD-START> JAN-01-1997 JAN-01-1998 JAN-01-1999 JAN-01-2000
<PERIOD-END> DEC-31-1997 DEC-31-1998 DEC-31-1999 JUN-30-2000
<CASH> 16,263 13,480 18,788 23,832
<SECURITIES> 20,566 13,285 684,156 189,695
<RECEIVABLES> 30,621 44,449 53,920 49,801
<ALLOWANCES> 2,578 1,545 2,056 2,073
<INVENTORY> 11,010 15,468 27,897 21,081
<CURRENT-ASSETS> 55,744 73,808 99,928 98,146
<PP&E> 69,253 77,493 165,494 185,351
<DEPRECIATION> 9,878 11,978 51,579 60,769
<TOTAL-ASSETS> 925,572 1,069,946 1,840,610 1,366,431
<CURRENT-LIABILITIES> 47,253 70,611 157,795 116,225
<BONDS> 88,632 94,092 152,303 172,698
0 0 0 0
0 0 0 0
<COMMON> 0 0 0 0
<OTHER-SE> 864,406 1,004,753 987,564 1,001,521
<TOTAL-LIABILITY-AND-EQUITY> 925,572 1,069,946 1,840,610 1,366,431
<SALES> 59,149 94,785 125,228 48,756
<TOTAL-REVENUES> 160,903 226,347 379,194 170,431
<CGS> 120,065 167,823 293,263 120,896
<TOTAL-COSTS> 36,058 34,898 90,977 58,969
<OTHER-EXPENSES> (49,223) (25,299) (46,644) 4,213
<LOSS-PROVISION> (447) (1,033) 515 14
<INTEREST-EXPENSE> 6,618 12,896 9,770 6,730
<INCOME-PRETAX> 47,832 37,062 31,313 (20,391)
<INCOME-TAX> 7,674 (315) 16,550 (8,050)
<INCOME-CONTINUING> 40,157 37,377 14,764 (12,341)
<DISCONTINUED> 0 0 0 0
<EXTRAORDINARY> 0 0 0 0
<CHANGES> 0 0 0 0
<NET-INCOME> 40,157 37,377 14,764 (12,341)
<EPS-BASIC> 0.31 0.29 0.12 (0.10)
<EPS-DILUTED> 0.31 0.29 0.12 (0.10)
</TABLE>