Financial report context:
2022 a financial safeguard package for cleared over-the-counter credit default swap contracts , and 2022 a financial safeguard package for cleared over-the-counter interest rate swap contracts . in the unlikely event of a payment default by a clearing firm , we would first apply assets of the defaulting clearing firm to satisfy its payment obligation . these assets include the defaulting firm 2019s guaranty fund contributions , performance bonds and any other available assets , such as assets required for membership and any associated trading rights . in addition , we would make a demand for payment pursuant to any applicable guarantee provided to us by the parent company of the clearing firm . thereafter , if the payment default remains unsatisfied , we would use the corporate contributions designated for the respective financial safeguard package . we would then use guaranty fund contributions of other clearing firms within the respective financial safeguard package and funds collected through an assessment against solvent clearing firms within the respective financial safeguard package to satisfy the deficit . we maintain a $ 5.0 billion 364-day multi-currency line of credit with a consortium of domestic and international banks to be used in certain situations by cme clearing . we have the option to request an increase in the line from $ 5.0 billion to $ 7.0 billion . we may use the proceeds to provide temporary liquidity in the unlikely event of a clearing firm default , in the event of a liquidity constraint or default by a depositary ( custodian of the collateral ) , or in the event of a temporary disruption with the payments systems that would delay payment of settlement variation between us and our clearing firms . the credit agreement requires us to pledge certain assets to the line of credit custodian prior to drawing on the line of credit . pledged assets may include clearing firm guaranty fund deposits held by us in the form of u.s . treasury or agency securities , as well as select money market mutual funds approved for our select interest earning facility ( ief ) programs . performance bond collateral of a defaulting clearing firm may also be used to secure a draw on the line . in addition to the 364-day multi- currency line of credit , we also have the option to use our $ 1.8 billion multi-currency revolving senior credit facility to provide liquidity for our clearing house in the unlikely event of default . aggregate performance bond deposits for clearing firms for all three cme financial safeguard packages was $ 86.8 billion , including $ 5.6 billion of cash performance bond deposits and $ 4.2 billion of letters of credit . a defaulting firm 2019s performance bond deposits can be used in the event of default of that clearing firm . the following shows the available assets at december 31 , 2012 in the event of a payment default by a clearing firm for the base financial safeguard package after first utilizing the defaulting firm 2019s available assets : ( in millions ) cme clearing available assets designated corporate contributions for futures and options ( 1 ) . . . . . . . . $ 100.0 guaranty fund contributions ( 2 ) . . . . . 2899.5 assessment powers ( 3 ) . . . . . . . . . . . . 7973.6 minimum total assets available for default ( 4 ) . . . . . . . . . . . . . . . . . . . . $ 10973.1 ( 1 ) cme clearing designates $ 100.0 million of corporate contributions to satisfy a clearing firm default in the event that the defaulting clearing firm 2019s guaranty contributions and performance bonds do not satisfy the deficit . ( 2 ) guaranty fund contributions of clearing firms include guaranty fund contributions required of clearing firms , but do not include any excess deposits held by us at the direction of clearing firms . ( 3 ) in the event of a clearing firm default , if a loss continues to exist after the utilization of the assets of the defaulted firm , our designated working capital and the non-defaulting clearing firms 2019 guaranty fund contributions , we have the right to assess all non-defaulting clearing members as defined in the rules governing the guaranty fund . ( 4 ) represents the aggregate minimum resources available to satisfy any obligations not met by a defaulting firm subsequent to the liquidation of the defaulting firm 2019s performance bond collateral. .

Financial table:
( in millions ): designated corporate contributions for futures and options ( 1 ); cme clearingavailable assets: $ 100.0
( in millions ): guaranty fund contributions ( 2 ); cme clearingavailable assets: 2899.5
( in millions ): assessment powers ( 3 ); cme clearingavailable assets: 7973.6
( in millions ): minimum total assets available for default ( 4 ); cme clearingavailable assets: $ 10973.1

Additional report context:
2022 a financial safeguard package for cleared over-the-counter credit default swap contracts , and 2022 a financial safeguard package for cleared over-the-counter interest rate swap contracts . in the unlikely event of a payment default by a clearing firm , we would first apply assets of the defaulting clearing firm to satisfy its payment obligation . these assets include the defaulting firm 2019s guaranty fund contributions , performance bonds and any other available assets , such as assets required for membership and any associated trading rights . in addition , we would make a demand for payment pursuant to any applicable guarantee provided to us by the parent company of the clearing firm . thereafter , if the payment default remains unsatisfied , we would use the corporate contributions designated for the respective financial safeguard package . we would then use guaranty fund contributions of other clearing firms within the respective financial safeguard package and funds collected through an assessment against solvent clearing firms within the respective financial safeguard package to satisfy the deficit . we maintain a $ 5.0 billion 364-day multi-currency line of credit with a consortium of domestic and international banks to be used in certain situations by cme clearing . we have the option to request an increase in the line from $ 5.0 billion to $ 7.0 billion . we may use the proceeds to provide temporary liquidity in the unlikely event of a clearing firm default , in the event of a liquidity constraint or default by a depositary ( custodian of the collateral ) , or in the event of a temporary disruption with the payments systems that would delay payment of settlement variation between us and our clearing firms . the credit agreement requires us to pledge certain assets to the line of credit custodian prior to drawing on the line of credit . pledged assets may include clearing firm guaranty fund deposits held by us in the form of u.s . treasury or agency securities , as well as select money market mutual funds approved for our select interest earning facility ( ief ) programs . performance bond collateral of a defaulting clearing firm may also be used to secure a draw on the line . in addition to the 364-day multi- currency line of credit , we also have the option to use our $ 1.8 billion multi-currency revolving senior credit facility to provide liquidity for our clearing house in the unlikely event of default . aggregate performance bond deposits for clearing firms for all three cme financial safeguard packages was $ 86.8 billion , including $ 5.6 billion of cash performance bond deposits and $ 4.2 billion of letters of credit . a defaulting firm 2019s performance bond deposits can be used in the event of default of that clearing firm . the following shows the available assets at december 31 , 2012 in the event of a payment default by a clearing firm for the base financial safeguard package after first utilizing the defaulting firm 2019s available assets : ( in millions ) cme clearing available assets designated corporate contributions for futures and options ( 1 ) . . . . . . . . $ 100.0 guaranty fund contributions ( 2 ) . . . . . 2899.5 assessment powers ( 3 ) . . . . . . . . . . . . 7973.6 minimum total assets available for default ( 4 ) . . . . . . . . . . . . . . . . . . . . $ 10973.1 ( 1 ) cme clearing designates $ 100.0 million of corporate contributions to satisfy a clearing firm default in the event that the defaulting clearing firm 2019s guaranty contributions and performance bonds do not satisfy the deficit . ( 2 ) guaranty fund contributions of clearing firms include guaranty fund contributions required of clearing firms , but do not include any excess deposits held by us at the direction of clearing firms . ( 3 ) in the event of a clearing firm default , if a loss continues to exist after the utilization of the assets of the defaulted firm , our designated working capital and the non-defaulting clearing firms 2019 guaranty fund contributions , we have the right to assess all non-defaulting clearing members as defined in the rules governing the guaranty fund . ( 4 ) represents the aggregate minimum resources available to satisfy any obligations not met by a defaulting firm subsequent to the liquidation of the defaulting firm 2019s performance bond collateral. .

Question: what portion of the minimum total assets available for default is related to assessment powers?
Answer: 72.7%