| S&P 500 | DVN | | 2019 - 4,910,000 2020 - 4,230,000 2021 - 3,420,000 -30% | 2019 - 9,633,246 2020 - 9,190,709 2021 - 7,965,672 -17% | 2019 - No data 2020 - No data 2021 - No data No data | 2019 - 22,019,740 2020 - 15,660,248 2021 - 18,442,530 Fluctuating | 2019 - No data 2020 - No data 2021 - No data No data | 2019 - 0.49 2020 - 0.43 2021 - 0.49 Fluctuating |