(Amounts in thousands except per unit amounts) 2008 2007 2006 2005 2004
INCOME STATEMENT DATA:          
Revenues from consolidated operations
$
21,905,656
$
16,950,125
$
13,990,969
$
12,256,959
$
8,321,202
Equity in earnings of unconsolidated affiliates
$
59,104
$
29,658
$
21,565
$
14,548
$
52,787
Gross operating margin(1)
$
2,057,469
$
1,492,068
$
1,362,449
$
1,136,347
$
655,191
Adjusted EBITDA(2)
$
1,986,586
$
1,428,728
$
1,329,410
$
1,120,554
$
638,386
Operating income
$
1,413,246
$
883,037
$
860,052
$
663,016
$
422,994
Net income
$
954,021
$
533,674
$
601,155
$
419,508
$
268,261
Fully diluted earnings per unit
$
1.85
$
0.96
$
1.22
$
0.91
$
0.87
Number of units for fully diluted calculation
437,582
434,427
414,759
382,963
266,045
           
BALANCE SHEET DATA:          
Total assets
$
17,957,535
$
16,608,007
$
13,989,718
$
12,591,016
$
11,315,461
Total debt
$
9,108,410
$
6,906,145
$
5,295,590
$
4,833,781
$
4,281,236
Minority interest
$
393,649
$
430,418
$
129,130
$
103,169
$
71,040
Combined equity/partners' equity
$
6,084,988
$
6,131,649
$
6,480,233
$
5,679,309
$
5,328,785
           
OTHER FINANCIAL DATA:          
Net capital expenditures
$
1,953,676
$
2,128,253
$
1,280,578
$
817,449
$
173,192
Business acquisitions, net of cash received(3)
$
202,160
$
35,793
$
276,500
$
326,602
$
696,745
Investments in and advances to unconsolidated affiliates
$
134,131
$
343,009
$
127,422
$
88,044
$
64,412
Total(4)
$
2,289,967
$
2,507,055
$
1,684,500
$
1,232,095
$
934,349
Distributable cash flow(2)
$
1,378,186
$
1,001,161
$
977,580
$
906,079
$
540,493
Cash distributions declared per common unit(5)
$
2.08
$
1.95
$
1.83
$
1.70
$
1.54
Annual cash distribution rate at December 31(5)
$
2.12
$
2.00
$
1.87
$
1.75
$
1.60