Rank	Countries/Territories	Count	Percent
1	United States	496	45.5%
2	China	342	31.3%
3	Germany	63	5.8%
4	France	20	1.8%
5	Japan	18	1.6%
6	Singapore	17	1.6%
7	Netherlands	15	1.4%
8	Ukraine	14	1.3%
9	Hong Kong	12	1.1%
10	Canada	12	1.1%
11	Pakistan	11	1%
12	Taiwan	10	0.9%
13	United Kingdom	9	0.8%
14	Australia	7	0.6%
15	Ireland	6	0.5%
16	Korea, Republic of	5	0.5%
17	India	4	0.4%
18	Nigeria	4	0.4%
19	Romania	4	0.4%
20	Switzerland	3	0.3%
21	Thailand	2	0.2%
22	Iran, Islamic Republic of	2	0.2%
23	Argentina	2	0.2%
24	Malaysia	2	0.2%
25	Cyprus	2	0.2%
26	Mongolia	1	0.1%
27	Luxembourg	1	0.1%
28	Burkina Faso	1	0.1%
29	Viet Nam	1	0.1%
30	Tanzania, United Republic of	1	0.1%
31	Russia	1	0.1%
32	Norway	1	0.1%
33	Palestine, State of	1	0.1%
34	Poland	1	0.1%