pre_text: item 1 . business cna financial corporation 2013 ( continued ) unpredictability in the law , insurance underwriting is expected to continue to be difficult in commercial lines , professional liability and other specialty coverages . the dodd-frank wall street reform and consumer protection act expands the federal presence in insurance oversight and may increase the regulatory requirements to which cna may be subject . the act 2019s requirements include streamlining the state-based regulation of reinsurance and nonadmitted insurance ( property or casualty insurance placed from insurers that are eligible to accept insurance , but are not licensed to write insurance in a particular state ) . the act also establishes a new federal insurance office within the u.s . department of the treasury with powers over all lines of insurance except health insurance , certain long term care insurance and crop insurance , to , among other things , monitor aspects of the insurance industry , identify issues in the regulation of insurers that could contribute to a systemic crisis in the insurance industry or the overall financial system , coordinate federal policy on international insurance matters and preempt state insurance measures under certain circumstances . the act calls for numerous studies and contemplates further regulation . the patient protection and affordable care act and the related amendments in the health care and education reconciliation act may increase cna 2019s operating costs and underwriting losses . this landmark legislation may lead to numerous changes in the health care industry that could create additional operating costs for cna , particularly with respect to workers 2019 compensation and long term care products . these costs might arise through the increased use of health care services by claimants or the increased complexities in health care bills that could require additional levels of review . in addition , due to the expected number of new participants in the health care system and the potential for additional malpractice claims , cna may experience increased underwriting risk in the lines of business that provide management and professional liability insurance to individuals and businesses engaged in the health care industry . the lines of business that provide professional liability insurance to attorneys , accountants and other professionals who advise clients regarding the health care reform legislation may also experience increased underwriting risk due to the complexity of the legislation . properties : the chicago location owned by ccc , a wholly owned subsidiary of cna , houses cna 2019s principal executive offices . cna owns or leases office space in various cities throughout the united states and in other countries . the following table sets forth certain information with respect to cna 2019s principal office locations : location ( square feet ) principal usage 333 s . wabash avenue 763322 principal executive offices of cna chicago , illinois 401 penn street 190677 property and casualty insurance offices reading , pennsylvania 2405 lucien way 116948 property and casualty insurance offices maitland , florida 40 wall street 114096 property and casualty insurance offices new york , new york 1100 ward avenue 104478 property and casualty insurance offices honolulu , hawaii 101 s . phillips avenue 83616 property and casualty insurance offices sioux falls , south dakota 600 n . pearl street 65752 property and casualty insurance offices dallas , texas 1249 s . river road 50366 property and casualty insurance offices cranbury , new jersey 4267 meridian parkway 46903 data center aurora , illinois 675 placentia avenue 46571 property and casualty insurance offices brea , california cna leases its office space described above except for the chicago , illinois building , the reading , pennsylvania building , and the aurora , illinois building , which are owned. .
post_text: item 1 . business cna financial corporation 2013 ( continued ) unpredictability in the law , insurance underwriting is expected to continue to be difficult in commercial lines , professional liability and other specialty coverages . the dodd-frank wall street reform and consumer protection act expands the federal presence in insurance oversight and may increase the regulatory requirements to which cna may be subject . the act 2019s requirements include streamlining the state-based regulation of reinsurance and nonadmitted insurance ( property or casualty insurance placed from insurers that are eligible to accept insurance , but are not licensed to write insurance in a particular state ) . the act also establishes a new federal insurance office within the u.s . department of the treasury with powers over all lines of insurance except health insurance , certain long term care insurance and crop insurance , to , among other things , monitor aspects of the insurance industry , identify issues in the regulation of insurers that could contribute to a systemic crisis in the insurance industry or the overall financial system , coordinate federal policy on international insurance matters and preempt state insurance measures under certain circumstances . the act calls for numerous studies and contemplates further regulation . the patient protection and affordable care act and the related amendments in the health care and education reconciliation act may increase cna 2019s operating costs and underwriting losses . this landmark legislation may lead to numerous changes in the health care industry that could create additional operating costs for cna , particularly with respect to workers 2019 compensation and long term care products . these costs might arise through the increased use of health care services by claimants or the increased complexities in health care bills that could require additional levels of review . in addition , due to the expected number of new participants in the health care system and the potential for additional malpractice claims , cna may experience increased underwriting risk in the lines of business that provide management and professional liability insurance to individuals and businesses engaged in the health care industry . the lines of business that provide professional liability insurance to attorneys , accountants and other professionals who advise clients regarding the health care reform legislation may also experience increased underwriting risk due to the complexity of the legislation . properties : the chicago location owned by ccc , a wholly owned subsidiary of cna , houses cna 2019s principal executive offices . cna owns or leases office space in various cities throughout the united states and in other countries . the following table sets forth certain information with respect to cna 2019s principal office locations : location ( square feet ) principal usage 333 s . wabash avenue 763322 principal executive offices of cna chicago , illinois 401 penn street 190677 property and casualty insurance offices reading , pennsylvania 2405 lucien way 116948 property and casualty insurance offices maitland , florida 40 wall street 114096 property and casualty insurance offices new york , new york 1100 ward avenue 104478 property and casualty insurance offices honolulu , hawaii 101 s . phillips avenue 83616 property and casualty insurance offices sioux falls , south dakota 600 n . pearl street 65752 property and casualty insurance offices dallas , texas 1249 s . river road 50366 property and casualty insurance offices cranbury , new jersey 4267 meridian parkway 46903 data center aurora , illinois 675 placentia avenue 46571 property and casualty insurance offices brea , california cna leases its office space described above except for the chicago , illinois building , the reading , pennsylvania building , and the aurora , illinois building , which are owned. .
table: Location Size  (square feet) Principal Usage
table: 333 S. Wabash AvenueChicago, Illinois 763,322 Principal executive offices of CNA
table: 401 Penn StreetReading, Pennsylvania 190,677 Property and casualty insurance offices
table: 2405 Lucien WayMaitland, Florida 116,948 Property and casualty insurance offices
table: 40 Wall StreetNew York, New York 114,096 Property and casualty insurance offices
table: 1100 Ward AvenueHonolulu, Hawaii 104,478 Property and casualty insurance offices
table: 101 S. Phillips AvenueSioux Falls, South Dakota 83,616 Property and casualty insurance offices
table: 600 N. Pearl StreetDallas, Texas 65,752 Property and casualty insurance offices
table: 1249 S. River RoadCranbury, New Jersey 50,366 Property and casualty insurance offices
table: 4267 Meridian ParkwayAurora, Illinois 46,903 Data center
table: 675 Placentia AvenueBrea, California 46,571 Property and casualty insurance offices
question: Analyse this data from a financial earnings document. what percent of the illinois properties relate to data centers?