Rank	Countries/Territories	Count	Percent
1	United States	354	38.7%
2	China	284	31%
3	Germany	75	8.2%
4	India	37	4%
5	Japan	27	3%
6	Sweden	17	1.9%
7		11	1.2%
8	Czech Republic	10	1.1%
9	Iran, Islamic Republic of	10	1.1%
10	Singapore	10	1.1%
11	Russia	9	1%
12	United Kingdom	9	1%
13	Canada	7	0.8%
14	Italy	6	0.7%
15	Netherlands	5	0.5%
16	Poland	5	0.5%
17	Guinea	5	0.5%
18	Hong Kong	5	0.5%
19	Ireland	3	0.3%
20	Australia	3	0.3%
21	France	3	0.3%
22	Taiwan	2	0.2%
23	Thailand	2	0.2%
24	Uzbekistan	2	0.2%
25	Chile	2	0.2%
26	Denmark	2	0.2%
27	Cyprus	2	0.2%
28	Korea, Republic of	2	0.2%
29	Malta	1	0.1%
30	Mongolia	1	0.1%
31	Brazil	1	0.1%
32	Venezuela, Bolivarian Republic of	1	0.1%
33	Norway	1	0.1%
34	Serbia	1	0.1%