financing activities the decrease in cash used in 2010 relative to 2009 was attributable to a decrease in commercial paper repayments , net of proceeds , proceeds from our share issuance to bm&fbovespa as well as the termination of the nymex securities lending program in 2009 . the decrease was partially offset by the distribution to dow jones of $ 607.5 million related to index services as well as an increase in share repurchases of $ 548.3 million . share repurchases increased in an effort to offset most of the dilution associated with the issuance of shares to bm&fbovespa . the increase in cash used in 2009 relative to 2008 was due to new issuances of debt of $ 2.9 billion in 2008 in conjunction with our merger with nymex holdings compared with net debt reductions of $ 900.1 million in debt instruments . the following table summarizes our debt outstanding as of december 31 , 2010: .
what is the estimated percentage of revolving credit facility in relation with the total senior credit facility in millions?
fixed rate notes due march 2018 , interest equal to 4.40% ( 4.40 % ) ( 2 ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 612.5 ( 1 ) in september 2008 , the company entered into an interest rate swap agreement that modified the variable interest obligation associated with this loan so that the interest payable effectively became fixed at a rate of 4.72% ( 4.72 % ) beginning with the interest accrued after october 22 , 2008 . the interest rate swap agreement was terminated on january 11 , 2011 when the loan was repaid . ( 2 ) in march 2010 , we completed an unregistered offering of fixed rate notes due 2018 . net proceeds from the offering were used to fund a distribution to dow jones in conjunction with our investment in index services . in february 2010 , we entered into a forward-starting interest rate swap agreement that modified the interest obligation associated with these notes so that the interest payable on the notes effectively became fixed at a rate of 4.46% ( 4.46 % ) beginning with the interest accrued after march 18 , 2010 . we maintained a $ 1.4 billion senior credit facility with various financial institutions , including the $ 420.5 million term loan and a $ 945.5 million revolving credit facility . the senior credit facility was terminated on january 11 , 2011 . any commercial paper outstanding was backed by the revolving credit facility . under our senior credit facility , we were required to maintain a consolidated net worth of at least $ 12.1 billion . effective january 11 , 2011 , we entered into a new $ 1.0 billion multi-currency revolving senior credit facility with various financial institutions . the proceeds from the revolving senior credit facility can be used for general corporate purposes , which includes providing liquidity for our clearing house . as long as we are not in default under the new senior credit facility , we have the option to increase the facility from time to time by an aggregate amount of up to $ 1.8 billion with the consent of the agent and lenders providing the additional funds . the new senior credit facility matures in january 2014 and is voluntarily prepayable from time to time without premium or penalty . under our new credit facility , we are required to remain in compliance with a consolidated net worth test , as defined as our consolidated shareholders 2019 equity as of september 30 , 2010 , giving effect to share repurchases made and special dividends paid during the term of the agreement ( and in no event greater than $ 2.0 billion in aggregate ) , multiplied by 0.65 . we maintain a 364-day fully secured , committed line of credit with a consortium of domestic and international banks to be used in certain situations by our clearing house . 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 for our collateral ) , or in the event of a temporary disruption with the domestic payments system that would delay payment of settlement variation between us and our clearing firms . clearing firm guaranty fund contributions received in the form of u.s . treasury securities , government agency securities or .