Rank	Countries/Territories	Count	Percent
1	United States	397	39.5%
2	China	289	28.8%
3	Germany	105	10.4%
4	Latvia	63	6.3%
5	Australia	20	2%
6	India	19	1.9%
7	France	16	1.6%
8	Nigeria	13	1.3%
9	Japan	12	1.2%
10	Netherlands	10	1%
11	Singapore	9	0.9%
12	Iran, Islamic Republic of	6	0.6%
13	Canada	5	0.5%
14	Hong Kong	5	0.5%
15	Cyprus	3	0.3%
16	Chile	3	0.3%
17	Italy	3	0.3%
18	Ukraine	3	0.3%
19	Portugal	2	0.2%
20	Russia	2	0.2%
21	Zambia	2	0.2%
22	Slovakia	2	0.2%
23	Spain	2	0.2%
24	Taiwan	2	0.2%
25	Thailand	2	0.2%
26	Korea, Republic of	2	0.2%
27	Iraq	1	0.1%
28	Indonesia	1	0.1%
29	Bulgaria	1	0.1%
30	Denmark	1	0.1%
31	Poland	1	0.1%
32	Mongolia	1	0.1%
33	Viet Nam	1	0.1%
34	United Kingdom	1	0.1%