Rank	Countries/Territories	Count	Percent
1	United States	293	34.2%
2	China	230	26.8%
3	Germany	96	11.2%
4	Netherlands	48	5.6%
5	Canada	19	2.2%
6	Japan	18	2.1%
7	India	17	2%
8	United Kingdom	16	1.9%
9	Romania	14	1.6%
10	Switzerland	9	1.1%
11	Taiwan	9	1.1%
12	France	9	1.1%
13	Ireland	8	0.9%
14	Australia	6	0.7%
15	Denmark	5	0.6%
16	Iran, Islamic Republic of	5	0.6%
17	Hong Kong	5	0.6%
18	Korea, Republic of	5	0.6%
19	Pakistan	5	0.6%
20	Ukraine	4	0.5%
21	Zambia	4	0.5%
22	Spain	3	0.4%
23	Italy	3	0.4%
24	Cyprus	3	0.4%
25	Belgium	3	0.4%
26	Brazil	2	0.2%
27	Egypt	2	0.2%
28	Israel	2	0.2%
29	Sweden	2	0.2%
30	Singapore	2	0.2%
31	Poland	2	0.2%
32	Malaysia	2	0.2%
33	Mongolia	2	0.2%
34	Norway	1	0.1%
35	Turkey	1	0.1%
36	Russia	1	0.1%
37	Chile	1	0.1%