During the three-month periods ended March 31, 2022 and 2021, we paid interest of $3,712 and $2,900, respectively. During the three-month period ended March 31, 2021, we collected approximately $2.925 million of stock subscriptions which were received prior to the filing of our Annual Report on Form 10-K for the year ended December 31, 2020 and were included in stock subscriptions receivable in our consolidated balance sheet as of December 31, 2020. During the three-month periods ended March 31, 2022 and 2021, we issued 53,238 and 30,018 shares of our Common Stock as matching contributions to our 401(k) Plan, which were valued at $44,720 and $76,846, respectively. During the three-month period ended March 31, 2022, we issued 16,632 shares of our Common Stock to our employees as partial payment in lieu of cash for their 2021 bonuses, which were valued at $16,965.