You Decide to Estimate the Following Quarterly Sales Forecasting Model

Short Answer

You decide to estimate the following quarterly sales forecasting model for new boat sales in your local county:
The equation is estimated using quarterly data on new boat sales in the county from 2001III -2007IV ( t = 1,..., 26). The variable D is a dummy variable for the second quarter, which is the "season" for selling new boats: D = 1 in the second quarter, and 0 otherwise. The results of the estimation are:

-The statistical estimates indicate a(n) ___________ (upward, downward) trend in sales of _________ units per year.