Rank	Countries/Territories	Count	Percent
1	United States	493	37.9%
2	China	355	27.3%
3	Germany	130	10%
4	Russia	75	5.8%
5	Canada	41	3.2%
6	Australia	30	2.3%
7	France	26	2%
8	Japan	19	1.5%
9	Netherlands	19	1.5%
10	Singapore	16	1.2%
11	Spain	10	0.8%
12	Italy	9	0.7%
13	Hong Kong	8	0.6%
14	United Kingdom	7	0.5%
15	Czech Republic	6	0.5%
16	Ireland	6	0.5%
17	India	5	0.4%
18	Cyprus	4	0.3%
19	Switzerland	4	0.3%
20	Thailand	3	0.2%
21	Portugal	3	0.2%
22	Brazil	3	0.2%
23	Austria	3	0.2%
24	Denmark	3	0.2%
25	Iran, Islamic Republic of	2	0.2%
26	Bangladesh	2	0.2%
27	Argentina	2	0.2%
28	Israel	2	0.2%
29	Korea, Republic of	2	0.2%
30	Lebanon	2	0.2%
31	Malaysia	2	0.2%
32	United Arab Emirates	2	0.2%
33	Mongolia	1	0.1%
34	Romania	1	0.1%
35	Ukraine	1	0.1%
36	Sweden	1	0.1%
37	Belgium	1	0.1%
38	Georgia	1	0.1%