Table 2 Degree centrality of major ports...

Table 2

Degree centrality of major ports in Northeast Asia from 2017 to 2020

Country	Port	In-degree				Out-degree
Country	Port	2017	2018	2019	2020	2017	2018	2019	2020
Korea	1. Busan	71	75	75	75	79	80	79	81
	2. Incheon	21	22	22	21	22	23	22	23
	3. Gwangyang	17	19	18	19	22	24	22	21
	4. Ulsan	8	8	8	8	12	13	13	13
Japan	1. Yokohama	33	31	31	31	29	26	26	25
	2. Kobe	32	33	32	31	19	16	16	17
	3. Nagoya	29	31	31	30	18	18	16	17
	4. Tokyo	21	21	21	19	31	32	33	32
	5. Osaka	14	15	15	14	30	31	31	31
Taiwan	1. Kaohsiung	39	43	43	42	45	42	42	39
	2. Taipei	13	13	13	13	19	19	19	20
	3. Taichung	10	10	11	11	8	7	9	8
China	1. Shanghai	57	57	57	60	58	57	57	63
	2. Shenzhen	51	48	48	49	32	32	33	36
	3. Hong Kong	42	40	44	43	50	54	45	51
	4. Ningbo	39	40	40	39	39	42	41	45
	5. Qingdao	33	33	31	30	41	43	41	43
	6. Xiamen	29	28	30	30	33	28	28	28
	7. Dalian	24	26	26	26	24	24	25	26
	8. Tianjin	23	21	20	21	35	34	35	36

Country	Port	In-degree				Out-degree
Country	Port	2017	2018	2019	2020	2017	2018	2019	2020
Korea	1. Busan	71	75	75	75	79	80	79	81
	2. Incheon	21	22	22	21	22	23	22	23
	3. Gwangyang	17	19	18	19	22	24	22	21
	4. Ulsan	8	8	8	8	12	13	13	13
Japan	1. Yokohama	33	31	31	31	29	26	26	25
	2. Kobe	32	33	32	31	19	16	16	17
	3. Nagoya	29	31	31	30	18	18	16	17
	4. Tokyo	21	21	21	19	31	32	33	32
	5. Osaka	14	15	15	14	30	31	31	31
Taiwan	1. Kaohsiung	39	43	43	42	45	42	42	39
	2. Taipei	13	13	13	13	19	19	19	20
	3. Taichung	10	10	11	11	8	7	9	8
China	1. Shanghai	57	57	57	60	58	57	57	63
	2. Shenzhen	51	48	48	49	32	32	33	36
	3. Hong Kong	42	40	44	43	50	54	45	51
	4. Ningbo	39	40	40	39	39	42	41	45
	5. Qingdao	33	33	31	30	41	43	41	43
	6. Xiamen	29	28	30	30	33	28	28	28
	7. Dalian	24	26	26	26	24	24	25	26
	8. Tianjin	23	21	20	21	35	34	35	36

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