Please answer the given financial question based on the context.
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 .
|( 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 2004 rate of decrease in development costs?


Answer: The answer is:0.11347