Rank	Countries/Territories	Count	Percent
1	United States	532	38.9%
2	China	372	27.2%
3	Germany	160	11.7%
4	Iran, Islamic Republic of	33	2.4%
5	Japan	23	1.7%
6	United Kingdom	23	1.7%
7	Netherlands	22	1.6%
8	Canada	20	1.5%
9	Russia	18	1.3%
10	Singapore	16	1.2%
11	Romania	13	1%
12	Chile	13	1%
13	Cyprus	11	0.8%
14	Spain	11	0.8%
15	Korea, Republic of	9	0.7%
16	Italy	9	0.7%
17	India	8	0.6%
18	Viet Nam	8	0.6%
19	France	7	0.5%
20	Australia	6	0.4%
21	Saudi Arabia	5	0.4%
22	Portugal	4	0.3%
23	Malaysia	4	0.3%
24	Czech Republic	4	0.3%
25	Hong Kong	4	0.3%
26	Ghana	4	0.3%
27	Sweden	3	0.2%
28	Taiwan	3	0.2%
29	Philippines	2	0.1%
30	Norway	2	0.1%
31	Indonesia	2	0.1%
32	Egypt	2	0.1%
33	Colombia	2	0.1%
34	Croatia	2	0.1%
35	Belgium	2	0.1%
36	Turkey	2	0.1%
37	Greece	1	0.1%
38	Palestine, State of	1	0.1%
39	Peru	1	0.1%
40	Poland	1	0.1%
41	Thailand	1	0.1%