Rank	Countries/Territories	Count	Percent
1	United States	307	35.6%
2	China	288	33.4%
3	Germany	67	7.8%
4	Australia	41	4.8%
5	Latvia	31	3.6%
6	Japan	27	3.1%
7	Korea, Republic of	12	1.4%
8	Singapore	11	1.3%
9	Netherlands	8	0.9%
10	Cyprus	8	0.9%
11	Canada	7	0.8%
12	United Kingdom	7	0.8%
13	Lithuania	6	0.7%
14	Ireland	6	0.7%
15	Benin	4	0.5%
16	Ukraine	4	0.5%
17	Romania	3	0.3%
18	Israel	3	0.3%
19	Denmark	3	0.3%
20	France	3	0.3%
21	Iran, Islamic Republic of	2	0.2%
22	Argentina	2	0.2%
23	Bangladesh	2	0.2%
24	Czech Republic	2	0.2%
25	Costa Rica	2	0.2%
26	Mongolia	2	0.2%
27	Spain	2	0.2%
28	Viet Nam	1	0.1%
29	South Africa	1	0.1%
30	Hong Kong	1	0.1%