Rank	Countries/Territories	Count	Percent
1	United States	272	37.4%
2	China	223	30.7%
3	Germany	59	8.1%
4	United Kingdom	21	2.9%
5	France	15	2.1%
6	India	14	1.9%
7	Japan	14	1.9%
8	Brazil	14	1.9%
9	Canada	10	1.4%
10	Italy	8	1.1%
11	Netherlands	6	0.8%
12	Singapore	6	0.8%
13	Sweden	5	0.7%
14	Cyprus	5	0.7%
15	Korea, Republic of	5	0.7%
16	Ireland	4	0.6%
17	Burkina Faso	4	0.6%
18	Switzerland	4	0.6%
19	Spain	4	0.6%
20	Turkey	4	0.6%
21	Pakistan	4	0.6%
22	Ukraine	3	0.4%
23	Viet Nam	2	0.3%
24	Taiwan	2	0.3%
25	Poland	2	0.3%
26	New Zealand	2	0.3%
27	Nepal	2	0.3%
28	Argentina	2	0.3%
29	Australia	2	0.3%
30	Austria	2	0.3%
31	Iran, Islamic Republic of	2	0.3%
32	Malaysia	1	0.1%
33	Mongolia	1	0.1%
34	Costa Rica	1	0.1%
35	Romania	1	0.1%
36	Russia	1	0.1%