We could say, re the excess money printing, excess profits, excess savings, and we have too many dollars chasing too few places to park the excess savings, driving that rate lower.
Maybe everybody already have all the stocks, bonds, real estate, and Gold they want so the overflow goes into bonds? The dollar is just another government manipulated thing on the futures market.
The so called stronger dollar is only stronger against the other idiot fake currencies. The excess dollars are weaker against the cost of living, stocks bonds real estate and gold.