5 development costs incurred during the period 1654 1251 1030
Important information:
table_4: ( in millions ) the development costs incurred during the period of 2007 is 1654 ; the development costs incurred during the period of 2006 is 1251 ; the development costs incurred during the period of 2005 is 1030 ;
table_5: ( in millions ) the changes in estimated future development costs of 2007 is -1727 ( 1727 ) ; the changes in estimated future development costs of 2006 is -527 ( 527 ) ; the changes in estimated future development costs of 2005 is -552 ( 552 ) ;
table_13: ( in millions ) the end of year of 2007 is $ 13495 ; the end of year of 2006 is $ 8518 ; the end of year of 2005 is $ 10601 ;
Reasoning Steps:
Step: average1-1(development costs incurred during the period, none) = 1311.7
Program:
table_average(development costs incurred during the period, none)
Program (Nested):
table_average(development costs incurred during the period, 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 ) 2007 2006 2005 sales and transfers of oil and gas produced , net of production , transportation and administrative costs $ ( 4887 ) $ ( 5312 ) $ ( 3754 ) net changes in prices and production , transportation and administrative costs related to future production 12845 ( 1342 ) 6648 .
Table
( in millions )                                                                                           | 2007             | 2006             | 2005            
sales and transfers of oil and gas produced net of production transportation and administrative costs     | $ -4887 ( 4887 ) | $ -5312 ( 5312 ) | $ -3754 ( 3754 )
net changes in prices and production transportation and administrative costs related to future production | 12845            | -1342 ( 1342 )   | 6648            
extensions discoveries and improved recovery less related costs                                           | 1816             | 1290             | 700             
development costs incurred during the period                                                              | 1654             | 1251             | 1030            
changes in estimated future development costs                                                             | -1727 ( 1727 )   | -527 ( 527 )     | -552 ( 552 )    
revisions of previous quantity estimates                                                                  | 290              | 1319             | 820             
net changes in purchases and sales of minerals in place                                                   | 23               | 30               | 4557            
accretion of discount                                                                                     | 1726             | 1882             | 1124            
net change in income taxes                                                                                | -6751 ( 6751 )   | -660 ( 660 )     | -6694 ( 6694 )  
timing and other                                                                                          | -12 ( 12 )       | -14 ( 14 )       | 307             
net change for the year                                                                                   | 4977             | -2083 ( 2083 )   | 4186            
beginning of year                                                                                         | 8518             | 10601            | 6415            
end of year                                                                                               | $ 13495          | $ 8518           | $ 10601         
net change for the year from discontinued operations                                                      | $ 2013           | $ -216 ( 216 )   | $ 162           
.
Question: 
5 development costs incurred during the period 1654 1251 1030
Important information:
table_4: ( in millions ) the development costs incurred during the period of 2007 is 1654 ; the development costs incurred during the period of 2006 is 1251 ; the development costs incurred during the period of 2005 is 1030 ;
table_5: ( in millions ) the changes in estimated future development costs of 2007 is -1727 ( 1727 ) ; the changes in estimated future development costs of 2006 is -527 ( 527 ) ; the changes in estimated future development costs of 2005 is -552 ( 552 ) ;
table_13: ( in millions ) the end of year of 2007 is $ 13495 ; the end of year of 2006 is $ 8518 ; the end of year of 2005 is $ 10601 ;
Reasoning Steps:
Step: average1-1(development costs incurred during the period, none) = 1311.7
Program:
table_average(development costs incurred during the period, none)
Program (Nested):
table_average(development costs incurred during the period, none)
