Table 1: The estimation results of parameters in model (12) with .

L NL L NL L NL

−0.0050 −0.0753 0.0016 −0.0407 0.0215 0.0754
−0.6284 1.0035 0.1551 1.2353 −0.2587 −1.4196
−0.2203 −0.6022 −0.4282 0.5073 0.1220 −0.1173
0.4818 2.1463 0.1034 0.4666 −0.2939 −1.3398
−16.778 −2.7541 7.3886
4.7152 −18.606 4.4934
−16.371 −9.1467 10.295
4.7435 −4.9194 2.8206
1.2345 3.6713 −1.0608
−10.108 3.6943 4.0766

SSR SSR SSR
0.4955 0.6803 0.5615 0.7399 0.4705 0.6918

Note: SSR is the sum squared residuals. L stands for the linear economic model (1). NL stands for the nonlinear economic model (14). stands for the -squared value.