the acquisition date is on or after the beginning of the first annual reporting period beginning on or after december 15 , 2008 . we will evaluate how the new requirements of statement no . 141 ( r ) would impact any business combinations completed in 2009 or thereafter . in december 2007 , the fasb also issued statement of financial accounting standards no . 160 , noncontrolling interests in consolidated financial statements 2014an amendment of accounting research bulletin no . 51 . a noncontrolling interest , sometimes called a minority interest , is the portion of equity in a subsidiary not attributable , directly or indirectly , to a parent . statement no . 160 establishes accounting and reporting standards for the noncontrolling interest in a subsidiary and for the deconsolidation of a subsidiary . under statement no . 160 , noncontrolling interests in a subsidiary must be reported as a component of consolidated equity separate from the parent 2019s equity . additionally , the amounts of consolidated net income attributable to both the parent and the noncontrolling interest must be reported separately on the face of the income statement . statement no . 160 is effective for fiscal years beginning on or after december 15 , 2008 and earlier adoption is prohibited . we do not expect the adoption of statement no . 160 to have a material impact on our financial statements and related disclosures . 2008 estimates the forward-looking statements provided in this discussion are based on our examination of historical operating trends , the information that was used to prepare the december 31 , 2007 reserve reports and other data in our possession or available from third parties . these forward-looking statements were prepared assuming demand , curtailment , producibility and general market conditions for our oil , natural gas and ngls during 2008 will be substantially similar to those of 2007 , unless otherwise noted . we make reference to the 201cdisclosure regarding forward-looking statements 201d at the beginning of this report . amounts related to canadian operations have been converted to u.s . dollars using a projected average 2008 exchange rate of $ 0.98 u.s . dollar to $ 1.00 canadian dollar . in january 2007 , we announced our intent to divest our west african oil and gas assets and terminate our operations in west africa , including equatorial guinea , cote d 2019ivoire , gabon and other countries in the region . in november 2007 , we announced an agreement to sell our operations in gabon for $ 205.5 million . we are finalizing purchase and sales agreements and obtaining the necessary partner and government approvals for the remaining properties in this divestiture package . we are optimistic we can complete these sales during the first half of 2008 . all west african related revenues , expenses and capital will be reported as discontinued operations in our 2008 financial statements . accordingly , all forward-looking estimates in the following discussion exclude amounts related to our operations in west africa , unless otherwise noted . though we have completed several major property acquisitions and dispositions in recent years , these transactions are opportunity driven . thus , the following forward-looking estimates do not include any financial and operating effects of potential property acquisitions or divestitures that may occur during 2008 , except for west africa as previously discussed . oil , gas and ngl production set forth below are our estimates of oil , gas and ngl production for 2008 . we estimate that our combined 2008 oil , gas and ngl production will total approximately 240 to 247 mmboe . of this total , approximately 92% ( 92 % ) is estimated to be produced from reserves classified as 201cproved 201d at december 31 , 2007 . the following estimates for oil , gas and ngl production are calculated at the midpoint of the estimated range for total production . oil gas ngls total ( mmbbls ) ( bcf ) ( mmbbls ) ( mmboe ) .
what percentage of the total oil and gas mmboe comes from canada?
.