Annual Reports Title View Add Files 2021 Form 10-K 3 MB Add Files 2021 Form 10-K 3 MB Add Files 2020 Form 10-K 1.8 MB Add Files 2020 Form 10-K 1.8 MB Add Files 2019 Form 10-K 1.4 MB Add Files 2019 Form 10-K 1.4 MB Add Files 2018 Form 10-K 1.1 MB Add Files 2018 Form 10-K 1.1 MB Add Files 2017 Form 10-K 1.3 MB Add Files 2017 Form 10-K 1.3 MB Add Files 2016 Form 10-K 1 MB Add Files 2016 Form 10-K 1 MB Add Files 2015 Form 10-K 1.1 MB Add Files 2015 Form 10-K 1.1 MB Proxy Statements Group 3,4,5Annual FilingsCurrent ReportsMergers & AcquisitionsOtherProxy FilingsQuarterly FilingsRegistration Statements Filing date View Apr 25, 2022 View HTML 0001193125-22-116438.pdf 0001193125-22-116438.xls Apr 28, 2021 View HTML 0001193125-21-137163.pdf 0001193125-21-137163.xls Apr 16, 2021 View HTML 0001193125-21-119561.pdf 0001193125-21-119561.xls May 19, 2020 View HTML 0001193125-20-145492.pdf 0001193125-20-145492.xls Apr 11, 2019 View HTML 0001193125-19-103142.pdf 0001193125-19-103142.xls