Please answer the given financial question based on the context.
Context: entergy gulf states , inc . management's financial discussion and analysis .
||( in millions )|
|2002 net revenue|$ 1130.7|
|volume/weather|17.8|
|fuel write-offs in 2002|15.3|
|net wholesale revenue|10.2|
|base rate decreases|-23.3 ( 23.3 )|
|nisco gain recognized in 2002|-15.2 ( 15.2 )|
|rate refund provisions|-11.3 ( 11.3 )|
|other|-14.1 ( 14.1 )|
|2003 net revenue|$ 1110.1|
the volume/weather variance was due to higher electric sales volume in the service territory . billed usage increased a total of 517 gwh in the residential and commercial sectors . the increase was partially offset by a decrease in industrial usage of 470 gwh due to the loss of two large industrial customers to cogeneration . the customers accounted for approximately 1% ( 1 % ) of entergy gulf states' net revenue in 2002 . in 2002 , deferred fuel costs of $ 8.9 million related to a texas fuel reconciliation case were written off and $ 6.5 million in expense resulted from an adjustment in the deregulated asset plan percentage as the result of a power uprate at river bend . the increase in net wholesale revenue was primarily due to an increase in sales volume to municipal and co- op customers and also to affiliated systems related to entergy's generation resource planning . the base rate decreases were effective june 2002 and january 2003 , both in the louisiana jurisdiction . the january 2003 base rate decrease of $ 22.1 million had a minimal impact on net income due to a corresponding reduction in nuclear depreciation and decommissioning expenses associated with the change in accounting to reflect an assumed extension of river bend's useful life . in 2002 , a gain of $ 15.2 million was recognized for the louisiana portion of the 1988 nelson units 1 and 2 sale . entergy gulf states received approval from the lpsc to discontinue applying amortization of the gain against recoverable fuel , resulting in the recognition of the deferred gain in income . rate refund provisions caused a decrease in net revenue due to additional provisions recorded in 2003 compared to 2002 for potential rate actions and refunds . gross operating revenues and fuel and purchased power expenses gross operating revenues increased primarily due to an increase of $ 440.2 million in fuel cost recovery revenues as a result of higher fuel rates in both the louisiana and texas jurisdictions . fuel and purchased power expenses increased $ 471.1 million due to an increase in the market prices of natural gas and purchased power . other income statement variances 2004 compared to 2003 other operation and maintenance expenses decreased primarily due to : 2022 voluntary severance program accruals of $ 22.5 million in 2003 ; and 2022 a decrease of $ 4.3 million in nuclear material and labor costs due to reduced staff in 2004. .
Question: what is the increase in fuel cost recovery revenues as a percentage of the change in net revenue from 2002 to 2003?
Answer:
21.36893