the pnc financial services group , inc .2013 form 10-k 65 liquidity and capital management liquidity risk has two fundamental components .the first is potential loss assuming we were unable to meet our funding requirements at a reasonable cost .the second is the potential inability to operate our businesses because adequate contingent liquidity is not available .we manage liquidity risk at the consolidated company level ( bank , parent company and nonbank subsidiaries combined ) to help ensure that we can obtain cost-effective funding to meet current and future obligations under both normal 201cbusiness as usual 201d and stressful circumstances , and to help ensure that we maintain an appropriate level of contingent liquidity .management monitors liquidity through a series of early warning indicators that may indicate a potential market , or pnc-specific , liquidity stress event .in addition , management performs a set of liquidity stress tests over multiple time horizons with varying levels of severity and maintains a contingency funding plan to address a potential liquidity stress event .in the most severe liquidity stress simulation , we assume that our liquidity position is under pressure , while the market in general is under systemic pressure .the simulation considers , among other things , the impact of restricted access to both secured and unsecured external sources of funding , accelerated run-off of customer deposits , valuation pressure on assets and heavy demand to fund committed obligations .parent company liquidity guidelines are designed to help ensure that sufficient liquidity is available to meet our parent company obligations over the succeeding 24-month period .liquidity-related risk limits are established within our enterprise liquidity management policy and supporting policies .management committees , including the asset and liability committee , and the board of directors and its risk committee regularly review compliance with key established limits .in addition to these liquidity monitoring measures and tools described above , we also monitor our liquidity by reference to the liquidity coverage ratio ( lcr ) which is further described in the supervision and regulation section in item 1 of this report .pnc and pnc bank calculate the lcr on a daily basis and as of december 31 , 2018 , the lcr for pnc and pnc bank exceeded the fully phased-in requirement of 100% ( 100 % ) .we provide additional information regarding regulatory liquidity requirements and their potential impact on us in the supervision and regulation section of item 1 business and item 1a risk factors of this report .sources of liquidity our largest source of liquidity on a consolidated basis is the customer deposit base generated by our banking businesses .these deposits provide relatively stable and low-cost funding .total deposits increased to $ 267.8 billion at december 31 , 2018 from $ 265.1 billion at december 31 , 2017 driven by growth in interest-bearing deposits partially offset by a decrease in noninterest-bearing deposits .see the funding sources section of the consolidated balance sheet review in this report for additional information related to our deposits .additionally , certain assets determined by us to be liquid as well as unused borrowing capacity from a number of sources are also available to manage our liquidity position .at december 31 , 2018 , our liquid assets consisted of short-term investments ( federal funds sold , resale agreements , trading securities and interest-earning deposits with banks ) totaling $ 22.1 billion and securities available for sale totaling $ 63.4 billion .the level of liquid assets fluctuates over time based on many factors , including market conditions , loan and deposit growth and balance sheet management activities .our liquid assets included $ 2.7 billion of securities available for sale and trading securities pledged as collateral to secure public and trust deposits , repurchase agreements and for other purposes .in addition , $ 4.9 billion of securities held to maturity were also pledged as collateral for these purposes .we also obtain liquidity through various forms of funding , including long-term debt ( senior notes , subordinated debt and fhlb borrowings ) and short-term borrowings ( securities sold under repurchase agreements , commercial paper and other short-term borrowings ) .see note 10 borrowed funds and the funding sources section of the consolidated balance sheet review in this report for additional information related to our borrowings .total senior and subordinated debt , on a consolidated basis , decreased due to the following activity : table 24 : senior and subordinated debt .
[['in billions', '2018'], ['january 1', '$ 33.3'], ['issuances', '4.5'], ['calls and maturities', '-6.8 ( 6.8 )'], ['other', '-.1 ( .1 )'], ['december 31', '$ 30.9']]
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Question: assuming all matured securities were pledged as collateral , how much should we assume came from the calls?
Answer: 1.9