data sources for macroeconomic time series:

GDPPOT.xls :: potential GDP :: https://fred.stlouisfed.org/series/GDPPOT
fredgraph.xls :: output gap, specifically 100 * (GDPC1 - GDPPOT) / GDPPOT
USREC :: NBER Recession Indicator :: https://fred.stlouisfed.org/series/USREC
UNRATE :: Unemployment Rate :: https://fred.stlouisfed.org/series/UNRATE^

CPILFESL :: Core CPI :: https://fred.stlouisfed.org/series/CPILFESL
CPIAUCSL :: CPI :: https://fred.stlouisfed.org/series/CPIAUCSL
PCETRIM12M159SFRBDAL :: Trimmed Mean PCE Inflation Rate :: https://fred.stlouisfed.org/series/PCETRIM12M159SFRBDAL

FEDFUNDS.slx :: Federal funds rate :: https://fred.stlouisfed.org/series/FEDFUNDS
DGS3MO.xls :: 3 months treasury constant maturity rate :: https://fred.stlouisfed.org/series/DGS3MO
TB3MS.xls :: 90 day t bill secondary market rate :: https://fred.stlouisfed.org/series/TB3MS
T10YIE.xls :: 10 year breakeven rate :: https://fred.stlouisfed.org/series/T10YIE
T10Y2Y.xls :: 10 year - 2 year treasury constant maturity :: https://fred.stlouisfed.org/series/T10Y2Y
DGS10.xls :: 10 year treasury constant maturity :: https://fred.stlouisfed.org/series/DGS10
DGS2.xls :: 2 year treasury constant maturity :: https://fred.stlouisfed.org/series/DGS2
RomerandromerDataAppendix.xls :: Romer Romer shocks :: https://eml.berkeley.edu/~cromer/Data/Shocks/romerandRomerDataAppendix.xls

GDP - GDPPOT  then / POP

FISCAL
GFDEGDQ188S.xls ::  Total Public Debt as Percent of Gross Domestic Product :: https://fred.stlouisfed.org/series/GFDEGDQ188S
MTSDS133FMS :: MonthlyFederal Surplus or Deficit :: https://fred.stlouisfed.org/series/MTSDS133FMS
FYFSD :: Annual Federal Surplus/Deficit :: https://fred.stlouisfed.org/series/FYFSD
FYFSDFYGDP :: Annual Federal Surplus/Deficit as Percent of GDP :: https://fred.stlouisfed.org/series/FYFSDFYGDP