Rank	Countries/Territories	Count	Percent
1	United States	467	42.5%
2	China	199	18.1%
3	Japan	127	11.6%
4	Germany	97	8.8%
5	India	26	2.4%
6	Singapore	21	1.9%
7	Nepal	17	1.5%
8	Canada	16	1.5%
9	Russia	16	1.5%
10	Korea, Republic of	11	1%
11	Poland	10	0.9%
12	United Kingdom	10	0.9%
13	Australia	9	0.8%
14	Netherlands	7	0.6%
15	Spain	7	0.6%
16	France	6	0.5%
17	Iran, Islamic Republic of	5	0.5%
18	Ireland	5	0.5%
19	Taiwan	4	0.4%
20	Thailand	4	0.4%
21	Uganda	4	0.4%
22	Turkey	3	0.3%
23	Greece	3	0.3%
24	Cyprus	3	0.3%
25	Argentina	3	0.3%
26	Colombia	2	0.2%
27	Georgia	2	0.2%
28	Indonesia	2	0.2%
29	Israel	2	0.2%
30	Malaysia	2	0.2%
31	Ukraine	2	0.2%
32	Switzerland	2	0.2%
33	Philippines	1	0.1%
34	Portugal	1	0.1%
35	Romania	1	0.1%
36	Hong Kong	1	0.1%
37	Djibouti	1	0.1%