Rank	Countries/Territories	Count	Percent
1	United States	297	39.5%
2	China	203	27%
3	Brazil	40	5.3%
4	Japan	29	3.9%
5	Germany	24	3.2%
6	Turkey	22	2.9%
7	Sweden	18	2.4%
8	Russia	15	2%
9	India	14	1.9%
10	Korea, Republic of	13	1.7%
11	Hong Kong	9	1.2%
12	Australia	9	1.2%
13	Taiwan	9	1.2%
14	Ireland	7	0.9%
15	Spain	6	0.8%
16	Switzerland	4	0.5%
17	Slovenia	3	0.4%
18	Singapore	3	0.4%
19	Netherlands	3	0.4%
20	Denmark	3	0.4%
21	France	2	0.3%
22	Iran, Islamic Republic of	2	0.3%
23	Lithuania	2	0.3%
24	Mongolia	2	0.3%
25	Nepal	2	0.3%
26	Pakistan	1	0.1%
27	Slovakia	1	0.1%
28	Serbia	1	0.1%
29	South Africa	1	0.1%
30	Ukraine	1	0.1%
31	Malaysia	1	0.1%
32	Iceland	1	0.1%
33	Greece	1	0.1%
34	Ethiopia	1	0.1%
35	Argentina	1	0.1%