A third-order autoregressive model is fitted to an annual time series with 16 values. The estimated parameters are 80 4.40, a₁ = 1.60, a2 = 0.70, a3 = 0.24, and the three most recent values are Y₁4 18, Y15=27, and Y16 = 39. Forecast the values for the next year and the following year. Y17-(Type an integer or a decimal.)

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