In 2013, the Federal Reserve and the OCC adopted final capital rules implementing Basel III requirements for U. S.  Banking organizations.
The final rules establish an integrated regulatory capital framework and implement in the United States the Basel III regulatory capital reforms from the Basel Committee on Banking Supervision and certain changes required by the Dodd-Frank Act.
Under the final rule, minimum requirements will increase for both the quantity and quality of capital held by banking organizations.
Consistent with the international Basel framework, the final rule includes a new minimum ratio of common equity tier 1 capital to risk-weighted assets and a capital conservation buffer of 2.5% of risk-weighted assets that will apply to all supervised financial institutions.
The rule also raises the minimum ratio of tier 1 capital to risk-weighted assets and includes a minimum leverage ratio of 4%.
These new minimum capital ratios were effective for us on January 1, 2015, and will be fully phased-in on January 1, 2019.
The following are the Basel III regulatory capital levels that we must satisfy to avoid limitations on capital distributions and discretionary bonus payments during the applicable transition period, from January 1, 2015, until January 1, 2019:
||Basel III Regulatory Capital Levels|
||January 1,2015|January 1,2016|January 1,2017|January 1,2018|January 1,2019|
|Common equity tier 1 risk-based capital ratio|4.5%|5.125%|5.75%|6.375%|7.0%|
|Tier 1 risk-based capital ratio|6.0%|6.625%|7.25%|7.875%|8.5%|
|Total risk-based capital ratio|8.0%|8.625%|9.25%|9.875%|10.5%|

The final rule emphasizes CET1 capital, the most loss-absorbing form of capital, and implements strict eligibility criteria for regulatory capital instruments.
The final rule also improves the methodology for calculating risk-weighted assets to enhance risk sensitivity.
Banks and regulators use risk weighting to assign different levels of risk to different classes of assets.
Based on the final Basel III rule, banking organizations with more than $15 billion in total consolidated assets are required to phase-out of additional tier 1 capital any non-qualifying capital instruments (such as trust preferred securities and cumulative preferred shares) issued before September 12, 2010.
We began the additional tier 1 capital phase-out of our trust preferred securities in 2015, but will be able to include these instruments in tier 2 capital as a non-advanced approaches institution.
Under Basel III, CET1 predominantly includes common stockholders’ equity, less certain deductions for goodwill and other intangible assets net of related taxes, over-funded net pension fund assets, and DTAs that arise from tax loss and credit carryforwards.
We elected to exclude accumulated other comprehensive income from CET1 as permitted in the final rule.
Tier 1 capital is predominantly comprised of CET1 as well as perpetual preferred stock and qualifying minority interests.
Total capital predominantly includes tier 1 capital as well as certain long-term debt and allowance for credit losses qualifying for tier 2 capital.
The calculations of CET1, tier 1 capital, and tier 2 capital include phase-out periods for certain instruments from January 2015 through December 2017.
The primary items subject to the phase-out from capital for us are other intangible assets, DTAs that arise from tax loss and credit carryforwards, and trust preferred securities.
Risk-weighted assets under the Basel III Standardized Approach are generally based on supervisory risk weightings that vary only by counterparty type and asset class.
The revisions to supervisory risk weightings for Basel III enhance risk sensitivity and include alternatives to the use of credit ratings when calculating the risk weight for certain assets.
Specifically, Basel III includes a more risk-sensitive treatment for past due and nonaccrual loans, certain commercial loans, MSRs, and certain unfunded commitments.
Basel III also prescribes a new formulaic approach for calculating the risk weight of securitization exposures that is also more risk sensitive.
Failure to meet applicable capital guidelines could subject the financial institution to a variety of enforcement remedies available to the federal regulatory authorities.
These include limitations on the ability to pay dividends, the issuance by the regulatory authority of a directive to increase capital, and the termination of deposit insurance by the FDIC.
In addition, the financial institution could be subject to the measures described below under Prompt Corrective Action as applicable to undercapitalized institutions.
The risk-based capital standards of the Federal Reserve, the OCC, and the FDIC specify that evaluations by the banking agencies of a bank’s capital adequacy will include an assessment of the exposure to declines in the economic value of a bank’s capital due to changes in interest rates.
These banking agencies issued a joint policy statement on interest rate risk describing prudent methods for monitoring such risk that rely principally on internal measures of exposure and active oversight of risk management activities by senior management.
Home equity – Home equity lending includes both home equity loans and lines-of-credit.
This type of lending, which is secured by a first-lien or junior-lien on the borrower’s residence, allows customers to borrow against the equity in their home or refinance existing mortgage debt.
Products include closed-end loans which are generally fixed-rate with principal and interest payments, and variable-rate, interest-only lines-of-credit which do not require payment of principal during the 10-year revolving period.
The home equity line of credit may convert to a 20-year amortizing structure at the end of the revolving period.
Applications are underwritten centrally in conjunction with an automated underwriting system.
The home equity underwriting criteria is based on minimum credit scores, debt-to-income ratios, and LTV ratios, with current collateral valuations.
The underwriting for the floating rate lines of credit also incorporates a stress analysis for a rising interest rate.
Residential mortgage – Residential mortgage loans represent loans to consumers for the purchase or refinance of a residence.
These loans are generally financed over a 15-year to 30-year term, and in most cases, are extended to borrowers to finance their primary residence.
Applications are underwritten centrally using consistent credit policies and processes.
All residential mortgage loan decisions utilize a full appraisal for collateral valuation.
Huntington has not originated or acquired residential mortgages that allow negative amortization or allow the borrower multiple payment options.
Other consumer – Other consumer loans primarily consists of consumer loans not secured by real estate, including personal unsecured loans, overdraft balances, and credit cards.
The table below provides the composition of our total loan and lease portfolio: Table 8 - Loan and Lease Portfolio Composition (dollar amounts in millions)
||At December 31,|
||2015|2014|2013|2012|2011|
|Commercial: -1|||||||||||
|Commercial and industrial|$20,560|41%|$19,033|40%|$17,594|41%|$16,971|42%|$14,699|38%|
|Commercial real estate:|||||||||||
|Construction|1,031|2|875|2|557|1|648|2|580|1|
|Commercial|4,237|8|4,322|9|4,293|10|4,751|12|5,246|13|
|Total commercial real estate|5,268|10|5,197|11|4,850|11|5,399|14|5,826|14|
|Total commercial|25,828|51|24,230|51|22,444|52|22,370|56|20,525|52|
|Consumer:|||||||||||
|Automobile|9,481|19|8,690|18|6,639|15|4,634|11|4,458|11|
|Home equity|8,471|17|8,491|18|8,336|19|8,335|20|8,215|21|
|Residential mortgage|5,998|12|5,831|12|5,321|12|4,970|12|5,228|13|
|Other consumer|563|1|414|1|380|2|419|1|498|3|
|Total consumer|24,513|49|23,426|49|20,676|48|18,358|44|18,399|48|
|Total loans and leases|$50,341|100%|$47,656|100%|$43,120|100%|$40,728|100%|$38,924|100%|

(1) As defined by regulatory guidance, there were no commercial loans outstanding that would be considered a concentration of lending to a particular industry or group of industries.
Our loan portfolio is diversified by consumer and commercial credit.
At the corporate level, we manage the credit exposure in part via a credit concentration policy.
The policy designates specific loan types, collateral types, and loan structures to be formally tracked and assigned limits as a percentage of capital.
C&I lending by NAICS categories, specific limits for CRE primary project types, loans secured by residential real estate, shared national credit exposure, and designated high risk loan definitions represent examples of specifically tracked components of our concentration management process.
Currently there are no identified concentrations that exceed the established limit.
Our concentration management policy is approved by the Risk Oversight Committee (ROC) and is one of the strategies used to ensure a high quality, well diversified portfolio that is consistent with our overall objective of maintaining an aggregate moderate-to-low risk profile.
Changes to existing concentration limits require the approval of the ROC prior to implementation, incorporating specific information relating to the potential impact on the overall portfolio composition and performance metrics.
The table below provides our total loan and lease portfolio segregated by the type of collateral securing the loan or lease.
The changes in the collateral composition from December 31, 2014 are consistent with the portfolio growth metrics, with increases noted
Table 48 - Selected Quarterly Income Statement, Capital, and Other Data (1)
||2014|
|Capital adequacy|December 31,|September 30,|June 30,|March 31,|
|Total risk-weighted assets(in millions)(11)|$54,479|$53,239|$53,035|$51,120|
|Tier 1 leverage ratio-11|9.74%|9.83%|10.01%|10.32%|
|Tier 1 risk-based capital ratio-11|11.50|11.61|11.56|11.95|
|Total risk-based capital ratio-11|13.56|13.72|13.67|14.13|
|Tier 1 common risk-based capital ratio-11|10.23|10.31|10.26|10.60|
|Tangible common equity / tangible asset ratio-8|8.17|8.35|8.38|8.63|
|Tangible equity / tangible asset ratio-9|8.76|8.95|8.99|9.26|
|Tangible common equity / risk-weighted assets ratio-11|9.86|9.99|9.99|10.22|

(1) Comparisons for presented periods are impacted by a number of factors.
Refer to the Significant Items section for additional discussion regarding these items.
(2) For all quarterly periods presented above, the impact of the convertible preferred stock issued in April of 2008 was excluded from the diluted share calculation because the result would have been higher than basic earnings per common share (antidilutive) for the periods.
(3) Deferred tax liability related to other intangible assets is calculated assuming a 35% tax rate.
(4) High and low stock prices are intra-day quotes obtained from Bloomberg.
(5) Net income applicable to common shares excluding expense for amortization of intangibles for the period divided by average tangible common shareholders’ equity.
Average tangible common shareholders’ equity equals average total common shareholders’ equity less average intangible assets and goodwill.
Expense for amortization of intangibles and average intangible assets are net of deferred tax liability, and calculated assuming a 35% tax rate.
(6) Noninterest expense less amortization of intangibles and goodwill impairment divided by the sum of FTE net interest income and noninterest income excluding securities gains (losses).
(7) Presented on a FTE basis assuming a 35% tax rate.
(8) Tangible common equity (total common equity less goodwill and other intangible assets) divided by tangible assets (total assets less goodwill and other intangible assets).
Other intangible assets are net of deferred tax, and calculated assuming a 35% tax rate.
(9) Tangible equity (total equity less goodwill and other intangible assets) divided by tangible assets (total assets less goodwill and other intangible assets).
Other intangible assets are net of deferred tax, and calculated assuming a 35% tax rate.
(10) On January 1, 2015, we became subject to the Basel III capital requirements and the standardized approach for calculating risk-weighted assets in accordance with subpart D of the final capital rule.
(11) Ratios are calculated on the Basel I basis.
ADDITIONAL DISCLOSURES Forward-Looking Statements This report, including MD&A, contains certain forward-looking statements, including certain plans, expectations, goals, projections, and statements, which are subject to numerous assumptions, risks, and uncertainties.
Statements that do not describe historical or current facts, including statements about beliefs and expectations, are forward-looking statements.
Forward-looking statements may be identified by words such as expect, anticipate, believe, intend, estimate, plan, target, goal, or similar expressions, or future or conditional verbs such as will, may, might, should, would, could, or similar variations.
The forward-looking statements are intended to be subject to the safe harbor provided by Section 27A of the Securities Act of 1933, Section 21E of the Securities Exchange Act of 1934, and the Private Securities Litigation Reform Act of 1995.
While there is no assurance that any list of risks and uncertainties or risk factors is complete, below are certain factors which could cause actual results to differ materially from those contained or implied in the forward-looking statements: (1) worsening of credit quality performance due to a number of factors such as the underlying value of collateral that could prove less valuable than otherwise assumed and assumed cash flows may be worse than expected, (2) changes in general economic, political, or industry conditions, uncertainty in U. S.  fiscal and monetary policy, including the interest rate policies of the Federal Reserve Board, volatility and disruptions in global capital and credit markets, (3) movements in interest rates, (4) competitive pressures on product pricing and services, (5) success, impact, and timing of our business strategies, including market acceptance of any new products or services
technical and research personnel and lab facilities, and significantly expanded the portfolio of patents available to us via license and through a cooperative development program.
In addition, we have acquired a 20 percent interest in GRT, Inc.
The GTFTM technology is protected by an intellectual property protection program.
The U. S.  has granted 17 patents for the technology, with another 22 pending.
Worldwide, there are over 300 patents issued or pending, covering over 100 countries including regional and direct foreign filings.
Another innovative technology that we are developing focuses on reducing the processing and transportation costs of natural gas by artificially creating natural gas hydrates, which are more easily transportable than natural gas in its gaseous form.
Much like LNG, gas hydrates would then be regasified upon delivery to the receiving market.
We have an active pilot program in place to test and further develop a proprietary natural gas hydrates manufacturing system.
The above discussion of the Integrated Gas segment contains forward-looking statements with respect to the possible expansion of the LNG production facility.
Factors that could potentially affect the possible expansion of the LNG production facility include partner and government approvals, access to sufficient natural gas volumes through exploration or commercial negotiations with other resource owners and access to sufficient regasification capacity.
The foregoing factors (among others) could cause actual results to differ materially from those set forth in the forward-looking statements.
Refining, Marketing and Transportation We have refining, marketing and transportation operations concentrated primarily in the Midwest, upper Great Plains, Gulf Coast and Southeast regions of the U. S.  We rank as the fifth largest crude oil refiner in the U. S.  and the largest in the Midwest.
Our operations include a seven-plant refining network and an integrated terminal and transportation system which supplies wholesale and Marathon-brand customers as well as our own retail operations.
Our wholly-owned retail marketing subsidiary Speedway SuperAmerica LLC (“SSA”) is the third largest chain of company-owned and -operated retail gasoline and convenience stores in the U. S.  and the largest in the Midwest.
Refining We own and operate seven refineries with an aggregate refining capacity of 1.188 million barrels per day (“mmbpd”) of crude oil as of December 31, 2009.
During 2009, our refineries processed 957 mbpd of crude oil and 196 mbpd of other charge and blend stocks.
The table below sets forth the location and daily crude oil refining capacity of each of our refineries as of December 31, 2009.

Question: What is the ratio of Construction to the total in2015 for Commercial real estate?

Python solution:
def solution():
    construction = 1031
    total_commercial_real_estate = 5268

    answer = (construction / total_commercial_real_estate) * 100
    
    return answer

Answer: 19.5709946849