This data set is used in Hansen (1992) to test the US GNP model proposed by Hamilton (1989). This series ranges from 1951Q2 to 1984Q4.
hamilton84GNPVector of dates
US GNP series
US GNP log difference
Hansen, Bruce E. 1992. “The likelihood ratio test under nonstandard conditions: testing the Markov switching model of GNP.” Journal of applied Econometrics 7 (S1): S61–S82.
Hamilton, James D. 1989. “A new approach to the economic analysis of nonstationary time series and the business cycle.” Econometrica 57 (2): 357–384.