what was the average ending balance in the discounted ending cash flow balance?
Important information:
text_0: supplementary information on oil and gas producing activities ( unaudited ) c o n t i n u e d summary of changes in standardized measure of discounted future net cash flows relating to proved oil and gas reserves ( in millions ) 2004 2003 2002 sales and transfers of oil and gas produced , net of production , transportation , and administrative costs $ ( 2715 ) $ ( 2487 ) $ ( 1983 ) net changes in prices and production , transportation and administrative costs related to future production 950 1178 2795 .
table_13: ( in millions ) the beginning of year of 2004 is 6001 ; the beginning of year of 2003 is 5441 ; the beginning of year of 2002 is 3216 ;
table_14: ( in millions ) the end of year of 2004 is $ 6469 ; the end of year of 2003 is $ 6001 ; the end of year of 2002 is $ 5441 ;
Reasoning Steps:
Step: average1-1(end of year, none) = 5970
Program:
table_average(end of year, none)
Program (Nested):
table_average(end of year, none)

Please answer the following financial question based on the context provided. Make sure to give the answer in raw number, not in percentage and without any units. If the question asks for percentage the value should be less than 1
Context:
supplementary information on oil and gas producing activities ( unaudited ) c o n t i n u e d summary of changes in standardized measure of discounted future net cash flows relating to proved oil and gas reserves ( in millions ) 2004 2003 2002 sales and transfers of oil and gas produced , net of production , transportation , and administrative costs $ ( 2715 ) $ ( 2487 ) $ ( 1983 ) net changes in prices and production , transportation and administrative costs related to future production 950 1178 2795 .
Table
( in millions )                                                                                           | 2004             | 2003             | 2002            
sales and transfers of oil and gas produced net of production transportation and administrative costs     | $ -2715 ( 2715 ) | $ -2487 ( 2487 ) | $ -1983 ( 1983 )
net changes in prices and production transportation and administrative costs related to future production | 950              | 1178             | 2795            
extensions discoveries and improved recovery less related costs                                           | 1352             | 618              | 1032            
development costs incurred during the period                                                              | 711              | 802              | 499             
changes in estimated future development costs                                                             | -556 ( 556 )     | -478 ( 478 )     | -297 ( 297 )    
revisions of previous quantity estimates                                                                  | 494              | 348              | 311             
net changes in purchases and sales of minerals in place                                                   | 33               | -531 ( 531 )     | 737             
net change in exchanges of minerals in place                                                              | 2013             | 403              | 2013            
accretion of discount                                                                                     | 790              | 807              | 417             
net change in income taxes                                                                                | -529 ( 529 )     | 65               | -1288 ( 1288 )  
timing and other                                                                                          | -62 ( 62 )       | -165 ( 165 )     | 2               
net change for the year                                                                                   | 468              | 560              | 2225            
beginning of year                                                                                         | 6001             | 5441             | 3216            
end of year                                                                                               | $ 6469           | $ 6001           | $ 5441          
net change for the year from discontinued operations                                                      | $ 2013           | $ -384 ( 384 )   | $ 212           
.
Question: 
what was the average ending balance in the discounted ending cash flow balance?
Important information:
text_0: supplementary information on oil and gas producing activities ( unaudited ) c o n t i n u e d summary of changes in standardized measure of discounted future net cash flows relating to proved oil and gas reserves ( in millions ) 2004 2003 2002 sales and transfers of oil and gas produced , net of production , transportation , and administrative costs $ ( 2715 ) $ ( 2487 ) $ ( 1983 ) net changes in prices and production , transportation and administrative costs related to future production 950 1178 2795 .
table_13: ( in millions ) the beginning of year of 2004 is 6001 ; the beginning of year of 2003 is 5441 ; the beginning of year of 2002 is 3216 ;
table_14: ( in millions ) the end of year of 2004 is $ 6469 ; the end of year of 2003 is $ 6001 ; the end of year of 2002 is $ 5441 ;
Reasoning Steps:
Step: average1-1(end of year, none) = 5970
Program:
table_average(end of year, none)
Program (Nested):
table_average(end of year, none)
