Prediction on Peak Values of Carbon Dioxide Emissions from the Chinese Transportation Industry Based on the SVR Model and Scenario Analysis

Table 3

Data of traffic carbon dioxide emissions and their influencing factors.

Year	GDP (10^9 yuan)	Population (million people)	Urbanization rate (%)	Energy consumption structure (%)	Energy intensity (t/10^6 t·km)	The proportion of the secondary industry (%)
1973	2756.20	881.94	17.18	100	3.12	42.80
1974	2764.13	900.35	17.29	100	3.49	42.40
1975	2733.36	916.40	17.40	100	3.24	45.40
1976	2731.29	930.69	17.46	100	3.57	45.00
1977	2760.39	943.46	17.52	100	3.44	46.70
1978	2797.23	956.17	17.90	100	2.84	47.70
1979	2897.74	969.01	18.62	100	2.57	47.00
1980	3007.38	981.24	19.36	100	2.20	48.10
1981	3078.63	993.89	20.12	100	2.17	46.00
1982	3145.57	1008.63	20.90	100	2.11	44.60
1983	3109.54	1023.31	21.55	100	2.13	44.20
1984	3263.05	1036.83	22.20	100	1.98	42.90
1985	3597.14	1051.04	22.87	100	1.78	42.70
1986	3766.86	1066.79	23.56	100	1.79	43.50
1987	3956.78	1084.04	24.26	100	1.74	43.30
1988	4436.76	1101.63	24.97	100	1.66	43.50
1989	4818.71	1118.65	25.70	100	1.67	42.50
1990	5094.93	1135.19	26.44	96.77	1.51	41.00
1991	5435.16	1150.78	27.31	97.06	1.55	41.50
1992	5881.59	1164.97	28.20	97.30	1.61	43.10
1993	6773.79	1178.44	29.10	97.62	1.73	46.20
1994	8173.02	1191.84	30.02	97.50	1.52	46.20
1995	9286.06	1204.86	30.96	97.67	1.53	46.80
1996	9892.30	1217.55	31.92	98.25	2.00	47.10
1997	10055.60	1230.08	32.88	98.00	1.67	47.10
1998	9969.33	1241.94	33.87	97.92	1.61	45.80
1999	9839.91	1252.74	34.87	98.15	1.69	45.40
2000	10041.96	1262.65	35.88	98.81	2.41	45.50
2001	10250.91	1271.85	37.09	98.82	2.27	44.80
2002	10315.81	1280.40	38.43	98.91	2.32	44.50
2003	10588.00	1288.40	39.78	97.17	2.54	45.60
2004	11325.49	1296.08	41.14	97.60	2.34	45.90
2005	11767.03	1303.72	42.52	97.01	2.19	47.00
2006	12231.34	1311.02	43.87	95.95	2.18	47.60
2007	13182.79	1317.89	45.20	96.23	2.06	46.90
2008	14204.05	1324.66	46.54	94.25	2.08	47.00
2009	14174.12	1331.26	47.88	92.74	1.94	46.00
2010	15154.41	1337.71	49.23	92.89	1.84	46.50
2011	16370.89	1344.13	50.51	92.13	1.80	46.50
2012	16746.90	1350.70	51.77	92.02	1.83	45.40
2013	17103.82	1357.38	53.01	91.83	2.04	44.20
2014	17239.07	1364.27	54.26	90.71	1.97	43.30
2015	17250.74	1371.22	55.50	90.66	2.15	41.10
2016	17441.79	1378.67	56.74	90.51	2.10	40.10
2017	18111.96	1386.40	57.96	89.68	2.08	40.50