Rank	Countries/Territories	Count	Percent
1	United States	454	43.4%
2	China	289	27.6%
3	Germany	109	10.4%
4	Iran, Islamic Republic of	24	2.3%
5	Netherlands	22	2.1%
6	Singapore	17	1.6%
7	Ukraine	14	1.3%
8	Japan	13	1.2%
9	Bulgaria	13	1.2%
10	Korea, Republic of	11	1.1%
11	India	9	0.9%
12	Canada	8	0.8%
13	Cyprus	6	0.6%
14	Argentina	5	0.5%
15	France	5	0.5%
16	United Kingdom	5	0.5%
17	Malaysia	5	0.5%
18	Hong Kong	4	0.4%
19	Egypt	4	0.4%
20	Indonesia	3	0.3%
21	South Africa	3	0.3%
22	Spain	3	0.3%
23	Qatar	2	0.2%
24	Russia	2	0.2%
25	Serbia	2	0.2%
26	Thailand	2	0.2%
27	Uganda	1	0.1%
28	Sweden	1	0.1%
29	Switzerland	1	0.1%
30	Tanzania, United Republic of	1	0.1%
31	Pakistan	1	0.1%
32	Philippines	1	0.1%
33	Portugal	1	0.1%
34	Kuwait	1	0.1%
35	Iraq	1	0.1%
36	Ghana	1	0.1%
37	Greece	1	0.1%
38	Australia	1	0.1%