Rank	Countries/Territories	Count	Percent
1	United States	641	38.3%
2	China	532	31.8%
3	Germany	169	10.1%
4	Iran, Islamic Republic of	33	2%
5	Netherlands	25	1.5%
6	Japan	24	1.4%
7	United Kingdom	24	1.4%
8	Canada	20	1.2%
9	Russia	19	1.1%
10	Singapore	18	1.1%
11	France	15	0.9%
12	Romania	14	0.8%
13	Chile	13	0.8%
14	Cyprus	13	0.8%
15	Spain	11	0.7%
16	Korea, Republic of	9	0.5%
17	Italy	9	0.5%
18	India	8	0.5%
19	Viet Nam	8	0.5%
20	Saudi Arabia	7	0.4%
21	Australia	6	0.4%
22	Sweden	5	0.3%
23	Portugal	4	0.2%
24	Hong Kong	4	0.2%
25	Malaysia	4	0.2%
26	Czech Republic	4	0.2%
27	Fiji	4	0.2%
28	Ghana	4	0.2%
29	Taiwan	3	0.2%
30	Philippines	2	0.1%
31	Norway	2	0.1%
32	Indonesia	2	0.1%
33	Egypt	2	0.1%
34	Colombia	2	0.1%
35	Croatia	2	0.1%
36	Belgium	2	0.1%
37	Turkey	2	0.1%
38	Israel	1	0.1%
39	Greece	1	0.1%
40	Palestine, State of	1	0.1%
41	Peru	1	0.1%
42	Poland	1	0.1%
43	Thailand	1	0.1%