Research on the Impact of Expressway on the County Economy Based on a Spatial DID Model: The Case of Three Provinces of China

Table 3

Descriptive statistics of the main variables.

Province	County	Year	GDP (10,000 yuan)	Population (10,000 people)	Investment in fixed assets (10,000 yuan)	Financial revenue (10,000 yuan)	Financial expenditure (10,000 yuan)	Expressway Connection
Guangdong	Dongyuan	2004	242,357	52	127,567	6833	53,237	0
		2005	245,098	53	139,740	10,257	62,442	1
		2006	316,992	54	203,670	15,703	73,389	1
		2007	417,860	52	242,902	20,166	97,459	1
		2008	512,531	54	145,533	22,789	107,439	1
		2009	511,182	57	162,857	26,045	125,383	1
		2010	595,479	57	218,948	30,741	145,208	1
		2011	743,345	59	185,261	40,021	173,153	1
		2012	794,021	55	185,261	47,406	191,835	1
		2013	863,663	56	571,838	60,272	231,619	1
		2014	979,803	59	668,479	73,540	295,969	1
		2015	1,006,351	59	752,427	79,807	323,145	1
		2016	1,046,923	59	917,610	83,063	393,346	1
		2017	1,137,344	59	1,112,709	88,127	402,662	1
	Fengshun	2004	263,915	67	19,353	6376	41,655	1
		2005	314,213	67	68,323	9431	46,566	1
		…
Hubei	Danjiangkou	2004	408,179	49	17,467	15,058	15,058	1
		2005	421,648	49	81,079	16,861	45,892	1
		2006	480,100	49	194,173	228,63	57,617	1
		2007	545,100	50	148,877	25,462	72,882	1
		2008	676,300	50	242,090	30,444	98,355	1
		2009	757,106	50	358,945	45,158	183,822	1
		2010	921,359	46	493,961	119,758	265,885	1
		2011	1,083,752	46	698,792	157,918	329,081	1
		2012	1,300,165	46	970,683	275,883	379,843	1
		2013	1,507,151	46	1,282,892	221,465	429,533	1
		2014	1,658,103	46	1,595,100	115,348	311,557	1
		2015	1,830,222	46	1,883,854	132,058	415,490	1
		2016	1,986,835	46	2,278,400	129,504	445,362	1
		2017	2,234,856	46	2,507,371	149,238	485,865	1
	Yunmeng	2004	469,066	58	24,700	13,065	27,340	0
		2005	469,623	58	99,471	13,376	30,488	1
		…
Gansu	Dongxiang	2004	33,537	27	122	766	16,674	1
		2005	43,921	27	151	738	21,083	1
		2006	48,509	27	179	781	31,366	1
		2007	54,146	27	233	970	46,654	1
		2008	63,095	27	336	1224	67,234	1
		2009	71,534	28	629	2090	86,135	1
		2010	79,364	32	814	2281	104,517	1
		2011	97,882	29	1192	2800	175,700	1
		2012	119,574	32	1755	5519	197,341	1
		2013	127,197	33	1899	10,689	188,671	1
		2014	150,854	35	2289	12,268	193,393	1
		2015	162,743	34	2613	6878	217,323	1
		2016	173,012	35	2830	7602	241,730	1
		2017	188,803	36	1148	8059	292,944	1
	Liangdang	2004	16,719	5	15.35	448	7512	0
		2005	19,990	5	18	461	9881	0
		…