Rank	Countries/Territories	Count	Percent
1	United States	523	40.7%
2	China	437	34%
3	Germany	84	6.5%
4	Russia	56	4.4%
5	France	27	2.1%
6	Singapore	22	1.7%
7	Canada	20	1.6%
8	Japan	16	1.2%
9	Switzerland	14	1.1%
10	Netherlands	11	0.9%
11	Cyprus	10	0.8%
12	Malaysia	8	0.6%
13	United Kingdom	8	0.6%
14	Hong Kong	6	0.5%
15	Korea, Republic of	5	0.4%
16	Argentina	5	0.4%
17	Australia	5	0.4%
18	Iran, Islamic Republic of	4	0.3%
19	India	3	0.2%
20	Turkey	3	0.2%
21	Ukraine	3	0.2%
22	Philippines	2	0.2%
23	Mongolia	2	0.2%
24	Sweden	2	0.2%
25	Luxembourg	2	0.2%
26	Bangladesh	2	0.2%
27	Belgium	1	0.1%
28	Latvia	1	0.1%
29	Lithuania	1	0.1%
30	Spain	1	0.1%
31	Mexico	1	0.1%