Table 5 Validity test results of SD model.
Time (Year) | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | Averages | |
|---|---|---|---|---|---|---|---|---|
GDP (billion) | Simulated | 25270 | 28093 | 30809 | 33466 | 35998 | 38339 | |
Real | 25270 | 26887 | 29887 | 32925 | 36012 | 38155 | ||
Error | 0.00% | 4.49% | 3.09% | 1.64% | −0.04% | 0.48% | 1.62% | |
Technology Investment (billion) | Simulated | 830 | 952 | 1077 | 1205 | 1333 | 1460 | |
Real | 862 | 936 | 1049 | 1205 | 1358 | 1526 | ||
Error | −3.70% | 1.74% | 2.64% | −0.03% | −1.81% | −4.30% | 2.37% | |
Total energy consumption (million tons of standard coal) | Simulated | 10658 | 10959 | 11101 | 11326 | 11716 | 11952 | |
Real | 10640 | 10931 | 11242 | 11382 | 11454 | 11696 | ||
Error | 0.17% | 0.26% | −1.26% | −0.49% | 2.29% | 2.19% | 1.11% | |
Carbon emissions (million tons) | Simulated | 20241 | 21323 | 21537 | 22197 | 22266 | 22750 | |
Real | 20770 | 20856 | 20940 | 20148 | 21318 | 22214 | ||
Error | −2.55% | 2.24% | 2.85% | 10.17% | 4.45% | 2.41% | 4.11% | |
Total population (million people) | Simulated | 2426 | 2439 | 2453 | 2469 | 2483 | 2497 | |
Real | 2426 | 2415 | 2420 | 2418 | 2424 | 2428 | ||
Error | 0.00% | 0.99% | 1.37% | 2.10% | 2.44% | 2.85% | 1.62% | |
