Rank	Countries/Territories	Count	Percent
1	China	305	28%
2	United States	302	27.7%
3	Germany	103	9.5%
4	Canada	55	5.1%
5	India	50	4.6%
6	Brazil	43	3.9%
7	Russia	31	2.8%
8	France	18	1.7%
9	Korea, Republic of	17	1.6%
10	Japan	15	1.4%
11	Italy	14	1.3%
12	Pakistan	14	1.3%
13	Ireland	11	1%
14	Czech Republic	11	1%
15	Spain	10	0.9%
16	Iran, Islamic Republic of	9	0.8%
17	United Kingdom	9	0.8%
18	Taiwan	8	0.7%
19	Romania	8	0.7%
20	Netherlands	7	0.6%
21	Australia	5	0.5%
22	Hong Kong	4	0.4%
23	Thailand	4	0.4%
24	Viet Nam	4	0.4%
25	Switzerland	4	0.4%
26	Ukraine	3	0.3%
27	Lithuania	3	0.3%
28	Mexico	3	0.3%
29	Ghana	2	0.2%
30	Greece	2	0.2%
31	Cyprus	2	0.2%
32	Bangladesh	1	0.1%
33	Belgium	1	0.1%
34	Argentina	1	0.1%
35	Israel	1	0.1%
36	Mongolia	1	0.1%
37	Malaysia	1	0.1%
38	Mauritius	1	0.1%
39	Kuwait	1	0.1%
40	Norway	1	0.1%
41	Sweden	1	0.1%
42	Slovakia	1	0.1%
43	Togo	1	0.1%
44	Turkey	1	0.1%