Rank	Countries/Territories	Count	Percent
1	United States	472	43.9%
2	China	287	26.7%
3	Germany	110	10.2%
4	Latvia	39	3.6%
5	France	25	2.3%
6	Japan	24	2.2%
7	Canada	14	1.3%
8	Philippines	14	1.3%
9	Netherlands	13	1.2%
10	Russia	10	0.9%
11	Switzerland	10	0.9%
12		9	0.8%
13	Peru	8	0.7%
14	Singapore	5	0.5%
15	Hong Kong	5	0.5%
16	Korea, Republic of	4	0.4%
17	Italy	4	0.4%
18	Australia	4	0.4%
19	Ukraine	3	0.3%
20	Norway	2	0.2%
21	Poland	2	0.2%
22	Argentina	2	0.2%
23	Cyprus	2	0.2%
24	Egypt	1	0.1%
25	Colombia	1	0.1%
26	India	1	0.1%
27	Ireland	1	0.1%
28	Mauritius	1	0.1%
29	Mexico	1	0.1%
30	Mongolia	1	0.1%
31	United Kingdom	1	0.1%