US National Debt
1929 $ 17 billion
--------------------Multiplier 2.35 --Herbert C. Hoover - Franklin D. Roosevelt
1939 $ 40 billion
--------------------Multiplier 6.33 --Franklin D. Roosevelt - Harry S. Truman - World War 2
1949 $ 253 billion
--------------------Multiplier 1.13 --Harry S. Truman - Dwight D. Eisenhower
1959 $ 285 billion
--------------------Multiplier 1.24 --Dwight D. Eisenhower - John F. Kennedy - Lyndon B. Johnson
1969 $ 354 billion
--------------------Multiplier 2.34 --Richard M. Nixon - Gerald R. Ford - James E. Carter
1979 $ 827 billion
------------------------------Multiplier 3.45 --James E. Carter to 1981 - Ronald W. Reagan
1989 $ 2 trillion 857 billion
-------------------------------Multiplier 1.98 --George H. W. Bush to 1993 - William J. Clinton
1999 $ 5 trillion 656 billion
-------------------------------Multiplier 2.11 --William J. Clinton to 2000 - George W. Bush to 2008
2009 $ 11 trillion 910 billion
2017 $ 20 trillion times 3.45 equals (Multiplier 3.45 year 1979 to 1989)
2027 $ 69 trillion
2017 $ 20 trillion times 6.33 equals (Multiplier 6.33 year 1939 to 1949)
2027 $ 126.6 trillion
These are two possible out comes in the many worlds interpretation.
Don't panic.