Rank	Countries/Territories	Count	Percent
1	United States	571	43.4%
2	China	424	32.2%
3	Germany	111	8.4%
4	France	20	1.5%
5	Singapore	20	1.5%
6	Japan	18	1.4%
7	Ukraine	15	1.1%
8	Netherlands	15	1.1%
9	Hong Kong	12	0.9%
10	Canada	12	0.9%
11	Pakistan	11	0.8%
12	Taiwan	10	0.8%
13	United Kingdom	9	0.7%
14	Australia	8	0.6%
15	India	8	0.6%
16	Korea, Republic of	6	0.5%
17	Ireland	6	0.5%
18	Belgium	4	0.3%
19	Romania	4	0.3%
20	Nigeria	4	0.3%
21	Malaysia	4	0.3%
22	Thailand	4	0.3%
23	Switzerland	3	0.2%
24	Argentina	3	0.2%
25	Cyprus	2	0.2%
26	Bulgaria	2	0.2%
27	Iran, Islamic Republic of	2	0.2%
28	Luxembourg	1	0.1%
29	Burkina Faso	1	0.1%
30	Tanzania, United Republic of	1	0.1%
31	Viet Nam	1	0.1%
32	Mongolia	1	0.1%
33	Norway	1	0.1%
34	Russia	1	0.1%
35	Palestine, State of	1	0.1%
36	Poland	1	0.1%