Assuming you want the international conventions not regional ones:
Last decade:
85 2013 Phoenix Arizona
86 2014 St. Louis Missouri*
87 2015 Jacksonville Florida
88 2016 San Antonio Texas
89 2017 Louisville Kentucky*
90 2018 Grand Rapids Michigan
91 2019 Scottsdale Arizona
XX 2020 No Convention due to Covid
92 2021 First Virtual Convention
93 2022 Atlanta Georgia
94 2023 Pittsburgh Pennsylvania