U.S. unemployment figures
Monthly U.S. male (16-19 years and from 20 years) and female (16-19 years and from 20 years) unemployment figures in thousands from 1948 till 1981.
A multivariate time series with 408 observations on 4 variables. The object is of class 'mts'.
Andrews D. F. and Herzberg H. M. (1985): Data: A Collection of Problems from Many Fields for the Student and Research Worker, Springer Series in Statistics.