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6. Stockholders' Equity (Tables)
3 Months Ended
Mar. 31, 2021
Stockholders' equity  
Dividends
Declaration date   Dividend     Total paid  
September 15, 2020   $ 0.05     $ 677,869  
December 15, 2020     0.05       679,779  
March 15, 2021     0.05       680,247