While inflation control is a well-established objective, in law and often in practice  monetary policy is often tasked with other goals. The roles of central banks have changed throughout history.
Page 2 of 7  Primary Dealers have contributed to the growth of the Government securities market by ensuring high demand during primary market auctions. In 2016, the ratio of primary dealer successful bids in the auctions relative to the rest of the market was 61 percent of all auction bids.