EXHIBIT 12 STATEMENT RE: COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES AND RATIO OF EARNINGS TO COMBINED FIXED CHARGES YEAR ENDED DECEMBER 31, ---------------------------------------------------- 1999 1998 1997 1996 1995 -------- -------- -------- -------- -------- Earnings before fixed charges Income before extraordinary item $155,993 $116,677 $ 68,969 $ 37,631 $ 22,309 Add: Interest expense 94,712 74,155 46,521 33,967 32,819 Depreciation expense on capitalized interest 1,396 1,001 650 502 450 Amortization of deferred financing costs 4,951 4,462 4,448 4,561 4,869 -------- -------- -------- -------- -------- Earnings before fixed charges $257,052 $196,295 $120,588 $ 76,661 $ 60,447 ======== ======== ======== ======== ======== Fixed charges: Interest expense 94,712 74,155 46,521 33,967 32,819 Amortization of deferred financing charges 4,951 4,462 4,448 4,561 4,869 Capitalized interest 15,288 16,317 11,802 7,708 3,475 -------- -------- -------- -------- -------- Fixed charges $114,951 $ 94,934 $ 62,771 $ 46,236 $ 41,163 -------- -------- -------- -------- -------- Preferred share distributions 11,000 11,000 4,247 - - Preferred unit distributions 3,783 - - - - -------- -------- -------- -------- -------- Combined fixed charges $129,734 $105,934 $ 67,018 $ 46,236 $ 41,163 ======== ======== ======== ======== ======== Ratio of earnings to fixed charges 2.24 2.07 1.92 1.66 1.47 ======== ======== ======== ======== ======== Ratio of earnings to combined fixed charges 1.98 1.85 1.80 1.66 1.47 ======== ======== ======== ======== ======== Certain amounts from prior periods have been restated to conform to current-year presentation.