Rank	Countries/Territories	Count	Percent
1	United States	489	37.8%
2	China	439	33.9%
3	Germany	106	8.2%
4	Russia	52	4%
5	Japan	24	1.9%
6	Korea, Republic of	21	1.6%
7	India	19	1.5%
8	Canada	17	1.3%
9	Netherlands	16	1.2%
10	Singapore	11	0.8%
11	Hong Kong	10	0.8%
12	United Kingdom	10	0.8%
13	Cyprus	9	0.7%
14	France	7	0.5%
15	Ireland	7	0.5%
16	Pakistan	7	0.5%
17	Iran, Islamic Republic of	5	0.4%
18		4	0.3%
19	South Africa	4	0.3%
20	Taiwan	4	0.3%
21	Thailand	4	0.3%
22	Mexico	3	0.2%
23	Albania	3	0.2%
24	Brazil	3	0.2%
25	Greece	3	0.2%
26	Latvia	2	0.2%
27	Australia	2	0.2%
28	Moldova, Republic of	2	0.2%
29	New Zealand	2	0.2%
30	Saudi Arabia	2	0.2%
31	Sweden	1	0.1%
32	Italy	1	0.1%
33	Peru	1	0.1%
34	Philippines	1	0.1%
35	Romania	1	0.1%
36	Argentina	1	0.1%
37	Chile	1	0.1%
38	Malaysia	1	0.1%