Rank	Countries/Territories	Count	Percent
1	United States	176	37.2%
2	China	162	34.2%
3		23	4.9%
4	Germany	22	4.7%
5	Bulgaria	12	2.5%
6	Latvia	12	2.5%
7	Singapore	12	2.5%
8	Japan	11	2.3%
9	United Kingdom	6	1.3%
10	Netherlands	6	1.3%
11	Spain	5	1.1%
12	Australia	4	0.8%
13	France	4	0.8%
14	Ireland	3	0.6%
15	Nigeria	2	0.4%
16	Philippines	2	0.4%
17	Russia	2	0.4%
18	Senegal	2	0.4%
19	Morocco	1	0.2%
20	Hong Kong	1	0.2%
21	Brazil	1	0.2%
22	Canada	1	0.2%
23	Sweden	1	0.2%
24	Thailand	1	0.2%
25	New Zealand	1	0.2%