{"pre_text": ["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 ."], "post_text": ["."], "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"]], "table_ori": [["<i>(In millions)</i>", "2004", "2003", "2002"], ["Sales and transfers of oil and gas produced, net of production, transportation, and administrative costs", "$(2,715)", "$(2,487)", "$(1,983)"], ["Net changes in prices and production, transportation and administrative costs related to future production", "950", "1,178", "2,795"], ["Extensions, discoveries and improved recovery, less related costs", "1,352", "618", "1,032"], ["Development costs incurred during the period", "711", "802", "499"], ["Changes in estimated future development costs", "(556)", "(478)", "(297)"], ["Revisions of previous quantity estimates", "494", "348", "311"], ["Net changes in purchases and sales of minerals in place", "33", "(531)", "737"], ["Net change in exchanges of minerals in place", "–", "403", "–"], ["Accretion of discount", "790", "807", "417"], ["Net change in income taxes", "(529)", "65", "(1,288)"], ["Timing and other", "(62)", "(165)", "2"], ["Net change for the year", "468", "560", "2,225"], ["Beginning of year", "6,001", "5,441", "3,216"], ["End of year", "$6,469", "$6,001", "$5,441"], ["Net change for the year from discontinued operations", "$–", "$(384)", "$212"]]}

Question: what was the average ending balance in the discounted ending cash flow balance?
Evidence:
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 ;
Program: table_average(end of year, none)
Answer:
str_answer: 5970
exe_answer: 5970.33333