brokered home equity lines of credit ) . as part of our overall risk analysis and monitoring , we segment the home equity portfolio based upon the loan delinquency , modification status and bankruptcy status , as well as the delinquency , modification status and bankruptcy status of any mortgage loan with the same borrower ( regardless of whether it is a first lien senior to our second lien ) . in establishing our alll for non-impaired loans , we utilize a delinquency roll-rate methodology for pools of loans . the roll-rate methodology estimates transition/roll of loan balances from one delinquency state to the next delinquency state and ultimately to charge-off . the roll through to charge-off is based on our actual loss experience for each type of pool . each of our home equity pools contains both first and second liens . our experience has been that the ratio of first to second lien loans has been consistent over time and the charge-off amounts for the pools , used to establish our allowance , include losses on both first and second lien loans . generally , our variable-rate home equity lines of credit have either a seven or ten year draw period , followed by a 20-year amortization term . during the draw period , we have home equity lines of credit where borrowers pay either interest only or principal and interest . we view home equity lines of credit where borrowers are paying principal and interest under the draw period as less risky than those where the borrowers are paying interest only , as these borrowers have a demonstrated ability to make some level of principal and interest payments . the risk associated with the borrower 2019s ability to satisfy the loan terms upon the draw period ending is considered in establishing our alll . based upon outstanding balances at december 31 , 2016 , the following table presents the periods when home equity lines of credit draw periods are scheduled to end . table 18 : home equity lines of credit 2013 draw period end in millions interest only product principal and interest product .
was the interest only product balance for the 2017 draw period greater than the 2018 draw period?\\n\\n
( a ) includes all home equity lines of credit that mature in 2017 or later , including those with borrowers where we have terminated borrowing privileges . ( b ) includes home equity lines of credit with balloon payments , including those where we have terminated borrowing privileges , of $ 35 million , $ 27 million , $ 20 million , $ 71 million and $ 416 million with draw periods scheduled to end in 2017 , 2018 , 2019 , 2020 and 2021 and thereafter , respectively . based upon outstanding balances , and excluding purchased impaired loans , at december 31 , 2016 , for home equity lines of credit for which the borrower can no longer draw ( e.g. , draw period has ended or borrowing privileges have been terminated ) , approximately 3% ( 3 % ) were 30-89 days past due and approximately 6% ( 6 % ) were 90 days or more past due , which are accounted for as nonperforming . generally , when a borrower becomes 60 days past due , we terminate borrowing privileges and those privileges are not subsequently reinstated . at that point , we continue our collection/recovery processes , which may include loan modification resulting in a loan that is classified as a tdr . auto loan portfolio the auto loan portfolio totaled $ 12.4 billion as of december 31 , 2016 , or 6% ( 6 % ) of our total loan portfolio . of that total , $ 10.8 billion resides in the indirect auto portfolio , $ 1.3 billion in the direct auto portfolio , and $ .3 billion in acquired or securitized portfolios , which has been declining as no pools have been recently acquired . indirect auto loan applications are generated from franchised automobile dealers . this business is strategically aligned with our core retail business . we have elected not to pursue non-prime auto lending as evidenced by an average new loan origination fico score during 2016 of 760 for indirect auto loans and 775 for direct auto loans . as of december 31 , 2016 , .4% ( .4 % ) of our auto loan portfolio was nonperforming and .5% ( .5 % ) of the portfolio was accruing past due . we offer both new and used automobile financing to customers through our various channels . the portfolio was composed of 57% ( 57 % ) new vehicle loans and 43% ( 43 % ) used vehicle loans at december 31 , 2016 . the auto loan portfolio 2019s performance is measured monthly , including updated collateral values that are obtained monthly and updated fico scores that are obtained at least quarterly . for internal reporting and risk management , we analyze the portfolio by product channel and product type , and regularly evaluate default and delinquency experience . as part of our overall risk analysis and monitoring , we segment the portfolio by loan structure , collateral attributes , and credit metrics which include fico score , loan-to-value and term . energy related loan portfolio our portfolio of loans outstanding in the oil and gas industry totaled $ 2.4 billion as of december 31 , 2016 , or 1% ( 1 % ) of our total loan portfolio and 2% ( 2 % ) of our total commercial lending portfolio . this portfolio comprised approximately $ 1.0 billion in the midstream and downstream sectors , $ .8 billion to oil services companies and $ .6 billion to upstream sectors . of the oil services portfolio , approximately $ .2 billion is not asset- based or investment grade . nonperforming loans in the oil and gas sector as of december 31 , 2016 totaled $ 184 million , or 8% ( 8 % ) of total nonperforming assets . our portfolio of loans outstanding in the coal industry totaled $ .4 billion as of december 31 , 2016 , or less than 1% ( 1 % ) of both our total loan portfolio and our total commercial lending portfolio . nonperforming loans in the coal industry as of december 31 , 2016 totaled $ 61 million , or 3% ( 3 % ) of total nonperforming assets . the pnc financial services group , inc . 2013 form 10-k 57 .