Rank	Countries/Territories	Count	Percent
1	United States	575	38.6%
2	China	479	32.1%
3	Germany	140	9.4%
4	Czech Republic	57	3.8%
5	France	37	2.5%
6	Japan	36	2.4%
7	India	35	2.3%
8	Singapore	32	2.1%
9	Netherlands	16	1.1%
10	Canada	11	0.7%
11	Ireland	7	0.5%
12	Cyprus	7	0.5%
13	Taiwan	7	0.5%
14	Korea, Republic of	6	0.4%
15	Norway	5	0.3%
16	Spain	5	0.3%
17	United Kingdom	5	0.3%
18	Iran, Islamic Republic of	4	0.3%
19	Hong Kong	4	0.3%
20	Argentina	3	0.2%
21	Latvia	3	0.2%
22	Sweden	2	0.1%
23	Russia	2	0.1%
24	United Arab Emirates	2	0.1%
25	Australia	2	0.1%
26	Bangladesh	2	0.1%
27	Belgium	2	0.1%
28	Finland	1	0.1%
29	Italy	1	0.1%
30	Ukraine	1	0.1%
31	Romania	1	0.1%