Rank	Countries/Territories	Count	Percent
1	United States	268	40.7%
2	China	184	27.9%
3	Germany	51	7.7%
4	Singapore	14	2.1%
5	Switzerland	12	1.8%
6	Ukraine	12	1.8%
7	Netherlands	9	1.4%
8	France	9	1.4%
9	Bulgaria	9	1.4%
10	Canada	9	1.4%
11	Viet Nam	8	1.2%
12	India	7	1.1%
13	Australia	6	0.9%
14	Cyprus	6	0.9%
15	Lithuania	6	0.9%
16	United Kingdom	6	0.9%
17	Taiwan	6	0.9%
18	Bangladesh	4	0.6%
19	Egypt	4	0.6%
20	Italy	3	0.5%
21	Japan	2	0.3%
22	Korea, Republic of	2	0.3%
23	Thailand	2	0.3%
24	Ethiopia	2	0.3%
25	Argentina	2	0.3%
26	Iraq	2	0.3%
27	Czech Republic	2	0.3%
28	Israel	2	0.3%
29	Ecuador	1	0.2%
30	Ireland	1	0.2%
31	Indonesia	1	0.2%
32	Turkey	1	0.2%
33	Tanzania, United Republic of	1	0.2%
34	Malaysia	1	0.2%
35	Morocco	1	0.2%
36	New Zealand	1	0.2%
37	Norway	1	0.2%
38	Philippines	1	0.2%