{"pre_text": ["management 2019s discussion and analysis 158 jpmorgan chase & co./2012 annual report the following table summarizes the ratings profile by derivative counterparty of the firm 2019s derivative receivables , including credit derivatives , net of other liquid securities collateral , for the dates indicated .", "ratings profile of derivative receivables ."], "post_text": ["as noted above , the firm uses collateral agreements to mitigate counterparty credit risk .", "the percentage of the firm 2019s derivatives transactions subject to collateral agreements 2013 excluding foreign exchange spot trades , which are not typically covered by collateral agreements due to their short maturity 2013 was 88% ( 88 % ) as of december 31 , 2012 , unchanged compared with december 31 , 2011 .", "credit derivatives credit derivatives are financial instruments whose value is derived from the credit risk associated with the debt of a third party issuer ( the reference entity ) and which allow one party ( the protection purchaser ) to transfer that risk to another party ( the protection seller ) when the reference entity suffers a credit event .", "if no credit event has occurred , the protection seller makes no payments to the protection purchaser .", "for a more detailed description of credit derivatives , see credit derivatives in note 6 on pages 218 2013227 of this annual report .", "the firm uses credit derivatives for two primary purposes : first , in its capacity as a market-maker ; and second , as an end-user , to manage the firm 2019s own credit risk associated with various exposures .", "included in end-user activities are credit derivatives used to mitigate the credit risk associated with traditional lending activities ( loans and unfunded commitments ) and derivatives counterparty exposure in the firm 2019s wholesale businesses ( 201ccredit portfolio management 201d activities ) .", "information on credit portfolio management activities is provided in the table below .", "in addition , the firm uses credit derivatives as an end-user to manage other exposures , including credit risk arising from certain afs securities and from certain securities held in the firm 2019s market making businesses .", "these credit derivatives , as well as the synthetic credit portfolio , are not included in credit portfolio management activities ; for further information on these credit derivatives as well as credit derivatives used in the firm 2019s capacity as a market maker in credit derivatives , see credit derivatives in note 6 on pages 226 2013227 of this annual report. ."], "table": [["rating equivalent december 31 ( in millions except ratios )", "rating equivalent exposure net of all collateral", "rating equivalent % (  % ) of exposure net of all collateral", "exposure net of all collateral", "% (  % ) of exposure net of all collateral"], ["aaa/aaa to aa-/aa3", "$ 20040", "33% ( 33 % )", "$ 25100", "35% ( 35 % )"], ["a+/a1 to a-/a3", "12169", "20", "22942", "32"], ["bbb+/baa1 to bbb-/baa3", "18197", "29", "9595", "14"], ["bb+/ba1 to b-/b3", "9636", "16", "10545", "15"], ["ccc+/caa1 and below", "1283", "2", "2488", "4"], ["total", "$ 61325", "100% ( 100 % )", "$ 70670", "100% ( 100 % )"]], "table_ori": [["Rating equivalent", "2012", "2011"], ["December 31,(in millions, except ratios)", "Exposure net of all collateral", "% of exposure net of all collateral", "Exposure net of all collateral", "% of exposure net of all collateral"], ["AAA/Aaa to AA-/Aa3", "$20,040", "33%", "$25,100", "35%"], ["A+/A1 to A-/A3", "12,169", "20", "22,942", "32"], ["BBB+/Baa1 to BBB-/Baa3", "18,197", "29", "9,595", "14"], ["BB+/Ba1 to B-/B3", "9,636", "16", "10,545", "15"], ["CCC+/Caa1 and below", "1,283", "2", "2,488", "4"], ["Total", "$61,325", "100%", "$70,670", "100%"]]}

Question: what percentage of derivative receivables was junk rated in 2012?
Evidence:
table_4: rating equivalent december 31 ( in millions except ratios ) the bb+/ba1 to b-/b3 of rating equivalent exposure net of all collateral is 9636 ; the bb+/ba1 to b-/b3 of rating equivalent % ( % ) of exposure net of all collateral is 16 ; the bb+/ba1 to b-/b3 of exposure net of all collateral is 10545 ; the bb+/ba1 to b-/b3 of % ( % ) of exposure net of all collateral is 15 ;
table_5: rating equivalent december 31 ( in millions except ratios ) the ccc+/caa1 and below of rating equivalent exposure net of all collateral is 1283 ; the ccc+/caa1 and below of rating equivalent % ( % ) of exposure net of all collateral is 2 ; the ccc+/caa1 and below of exposure net of all collateral is 2488 ; the ccc+/caa1 and below of % ( % ) of exposure net of all collateral is 4 ;
Program: subtract(16, 2)
Answer:
str_answer: 18
exe_answer: 14