Table 3.

The top 10 productive countries.

Rank	Country	TP	%TP	TC	%TC	H-index
1	United States	698	20.42%	22,853	28.01%	69
2	China	307	8.98%	5,059	6.20%	38
3	United kingdom	212	6.20%	5,695	6.98%	44
4	Canada	142	4.15%	3,931	4.82%	33
5	Australia	134	3.92%	2,607	3.20%	29
6	Italy	123	3.60%	2,536	3.11%	29
7	Netherlands	114	3.33%	4,106	5.03%	37
8	Germany	112	3.28%	2,742	3.36%	28
9	India	90	2.63%	1374	1.68%	20
10	France	83	2.43%	2,115	2.59%	28

%TP = (Total Publications/Document numbers)*100%; %TC = (TC = Total Citations/All Citations)*100%.