模型

SSE

AIC

因变量关于时间的回归模型

$\{\begin{array}{l}{x}_t=0.003284\times {\left(t-1989\right)}^5+{\epsilon }_t\\ {\epsilon }_t=0.9339{\epsilon }_{t-1}+a_t\end{array}$

23388780.8

467.313674

延迟因变量回归模型

$x_t=1.2075x_{t-1}+{\epsilon }_t$

29354720.8

469.617 822