Rank	Countries/Territories	Count	Percent
1	United States	638	35%
2	China	620	34%
3	Germany	237	13%
4	Japan	43	2.4%
5		32	1.8%
6	Russia	31	1.7%
7	India	22	1.2%
8	Latvia	18	1%
9	Brazil	18	1%
10	France	17	0.9%
11	Ukraine	17	0.9%
12	Canada	14	0.8%
13	Hong Kong	12	0.7%
14	Australia	10	0.5%
15	Cyprus	8	0.4%
16	Korea, Republic of	8	0.4%
17	Hungary	7	0.4%
18	Taiwan	7	0.4%
19	Senegal	6	0.3%
20	Luxembourg	6	0.3%
21	Netherlands	5	0.3%
22	Ireland	5	0.3%
23	Belgium	5	0.3%
24	South Africa	5	0.3%
25	United Kingdom	5	0.3%
26	Singapore	3	0.2%
27	Egypt	3	0.2%
28	Bangladesh	3	0.2%
29	Poland	3	0.2%
30	Romania	2	0.1%
31	Malaysia	2	0.1%
32	Mongolia	2	0.1%
33	Switzerland	1	0.1%
34	Mexico	1	0.1%
35	Norway	1	0.1%
36	Saudi Arabia	1	0.1%
37	Israel	1	0.1%
38	Iran, Islamic Republic of	1	0.1%
39	Lithuania	1	0.1%
40	Argentina	1	0.1%
41	Denmark	1	0.1%
42	Finland	1	0.1%
43	Greece	1	0.1%