Rank	Countries/Territories	Count	Percent
1	United States	594	38.2%
2	China	467	30%
3	Germany	179	11.5%
4	Latvia	75	4.8%
5	France	44	2.8%
6	Japan	25	1.6%
7	Russia	25	1.6%
8	Netherlands	21	1.3%
9	United Kingdom	21	1.3%
10	Canada	19	1.2%
11	Korea, Republic of	17	1.1%
12	Singapore	13	0.8%
13	Ireland	8	0.5%
14	Australia	6	0.4%
15	Taiwan	6	0.4%
16	India	5	0.3%
17	Switzerland	4	0.3%
18	Uganda	3	0.2%
19	Norway	3	0.2%
20	Cyprus	3	0.2%
21	Iran, Islamic Republic of	2	0.1%
22	Peru	2	0.1%
23	Sweden	2	0.1%
24	Malaysia	2	0.1%
25	Mexico	2	0.1%
26	Mongolia	1	0.1%
27	Romania	1	0.1%
28	Slovenia	1	0.1%
29	South Africa	1	0.1%
30	Spain	1	0.1%
31	Italy	1	0.1%
32	Luxembourg	1	0.1%
33	Argentina	1	0.1%
34	Hong Kong	1	0.1%