Rank	Countries/Territories	Count	Percent
1	United States	642	40.6%
2	China	550	34.8%
3	Germany	116	7.3%
4	Canada	32	2%
5	Iran, Islamic Republic of	28	1.8%
6		27	1.7%
7	France	24	1.5%
8	United Kingdom	18	1.1%
9	Japan	15	0.9%
10	Czech Republic	14	0.9%
11	Netherlands	14	0.9%
12	Singapore	10	0.6%
13	Spain	9	0.6%
14	Italy	7	0.4%
15	Turkey	7	0.4%
16	Australia	7	0.4%
17	Cyprus	7	0.4%
18	Russia	6	0.4%
19	Saudi Arabia	5	0.3%
20	Sweden	5	0.3%
21	Hong Kong	5	0.3%
22	India	5	0.3%
23	Greece	3	0.2%
24	Korea, Republic of	3	0.2%
25	Ecuador	3	0.2%
26	Ukraine	3	0.2%
27	Switzerland	2	0.1%
28	Taiwan	2	0.1%
29	Norway	2	0.1%
30	Brazil	2	0.1%
31	Latvia	2	0.1%
32	Lithuania	2	0.1%
33	Mexico	2	0.1%
34	Mongolia	1	0.1%
35	Pakistan	1	0.1%