Table:
revised average level
previously published average level
average revision

millions of dollars

average 2013 to 2015

household final consumption expenditure
1,078,106
1,074,629
3,477

government final consumption expenditure
405,650
407,940
-2,290

non-profit institutions serving households' final consumption expenditure
26,990
27,381
-391

business gross fixed capital formation
393,011
382,170
10,841

non-profit institutions serving households' gross fixed capital formation
2,842
2,996
-154

government gross fixed capital formation
74,149
76,548
-2,399

inventories
8,566
9,371
-805

exports
608,624
607,703
921

imports
641,618
639,091
2,527

gross domestic product at market prices
1,955,614
1,949,508
6,106

2013

household final consumption expenditure
1,034,804
1,032,863
1,941

government final consumption expenditure
393,848
397,632
-3,784

non-profit institutions serving households' final consumption expenditure
26,429
26,535
-106

business gross fixed capital formation
383,839
376,938
6,901

non-profit institutions serving households' gross fixed capital formation
2,913
2,847
66

government gross fixed capital formation
73,349
73,060
289

inventories
13,705
13,533
172

exports
572,359
573,083
-724

imports
603,606
602,822
784

gross domestic product at market prices
1,897,531
1,892,193
5,338

2014

household final consumption expenditure
1,083,548
1,079,409
4,139

government final consumption expenditure
405,373
406,340
-967

non-profit institutions serving households' final consumption expenditure
26,769
27,294
-525

business gross fixed capital formation
404,337
390,007
14,330

non-profit institutions serving households' gross fixed capital formation
2,821
3,044
-223

government gross fixed capital formation
72,216
76,688
-4,472

inventories
9,248
8,488
760

exports
626,280
624,594
1,686

imports
646,555
643,209
3,346

gross domestic product at market prices
1,983,117
1,973,043
10,074

2015

household final consumption expenditure
1,115,965
1,111,616
4,349

government final consumption expenditure
417,730
419,848
-2,118

non-profit institutions serving households' final consumption expenditure
27,773
28,315
-542

business gross fixed capital formation
390,858
379,565
11,293

non-profit institutions serving households' gross fixed capital formation
2,793
3,096
-303

government gross fixed capital formation
76,881
79,896
-3,015

inventories
2,746
6,093
-3,347

exports
627,234
625,431
1,803

imports
674,694
671,243
3,451

gross domestic product at market prices
1,986,193
1,983,288
2,905

Statement: the revisions to the estimates of business inventories were significant in 2015, declining $3.1 billion.
Question: what was the amount the estimates of business inventories were revised downward for 2015?
Answer: [3347]