Rank	Countries/Territories	Count	Percent
1	United States	662	36.5%
2	China	513	28.2%
3	Germany	150	8.3%
4	Latvia	61	3.4%
5	Netherlands	54	3%
6	United Kingdom	38	2.1%
7	Canada	34	1.9%
8	Ireland	31	1.7%
9	Japan	28	1.5%
10	India	27	1.5%
11		18	1%
12	Australia	17	0.9%
13	France	17	0.9%
14	Romania	16	0.9%
15	Iran, Islamic Republic of	13	0.7%
16	Singapore	12	0.7%
17	Switzerland	11	0.6%
18	Taiwan	11	0.6%
19	Ukraine	10	0.6%
20	Korea, Republic of	10	0.6%
21	Cyprus	9	0.5%
22	Hong Kong	8	0.4%
23	Denmark	7	0.4%
24	Egypt	6	0.3%
25	Portugal	6	0.3%
26	Spain	6	0.3%
27	Pakistan	5	0.3%
28	Brazil	4	0.2%
29	Zambia	4	0.2%
30	Belgium	3	0.2%
31	Poland	3	0.2%
32	Mongolia	3	0.2%
33	Italy	3	0.2%
34	Malaysia	2	0.1%
35	Israel	2	0.1%
36	Russia	2	0.1%
37	Greece	2	0.1%
38	Sweden	2	0.1%
39	Turkey	1	0.1%
40	Chile	1	0.1%
41	Bangladesh	1	0.1%
42	Saudi Arabia	1	0.1%
43	Norway	1	0.1%
44	Lebanon	1	0.1%