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Monthly Federal Reserve Board Production Index (1948-1978, n = 372 months).
data(prodn)
The format is: Time-Series [1:372] from 1948 to 1979: 40.6 41.1 40.5 40.1 40.4 41.2 39.3 41.6 42.3 43.2 ...
http://www.stat.pitt.edu/stoffer/tsa4/