Year 2021 Quarter Ended December 31, 2020 Year 2020 Quarter Ended September 30, 2020 Quarter Ended June 30, 2020 Quarter Ended March 31, 2020 Year 2019 Quarter Ended December 31, 2019 Quarter Ended March 31, 2019 Year 2018 Quarter Ended June 30, 2018 Quarter Ended March 31, 2018 Year 2017 Quarter Ended June 30, 2017 Quarter Ended December 31, 2016 Year 2016 Quarter Ended September 30, 2016 Quarter Ended June 30, 2016 Quarter Ended March 31, 2016 Quarter Ended December 31, 2015 Year 2015 Quarter Ended September 30, 2015 Quarter Ended June 30, 2015 Quarter Ended March 31, 2015 Quarter Ended December 31, 2014 Year 2014 Quarter Ended September 30, 2014 Quarter Ended June 30, 2014 Quarter Ended March 31, 2014 Quarter Ended December 31, 2013