Congress is required by Article I, Section 6, of the Constitution to determine its own pay. Prior to 1969, Congress did so by enacting stand-alone legislation. From 1789 through 1968, Congress raised its pay 22 times using this procedure. Congressional salaries initially were $1,500. By 1968, they had risen to $30,000. Stand-alone legislation may still be used to raise Member pay, as it was most recently in 1982, 1983, 1989, and 1991, but two other methods are now also available, an automatic annual adjustment procedure and a commission process.