Table 1.

The Top 10 countries by documents.

RANK	Country	Documents	% of Total	Centrality	Half-Life
1	China	1382	26.69	0.22	7.5
2	USA	1049	20.26	0.41	5.5
3	Italy	206	3.98	0.09	6.5
4	Germany	193	3.73	0.17	6.5
5	Spain	184	3.55	0.09	6.5
6	England	171	3.30	0.18	6.5
7	Canada	169	3.26	0.12	5.5
8	France	159	3.07	0.09	5.5
9	Japan	125	2.41	0.05	6.5
10	India	114	2.20	0.03	6.5