Rank	Countries/Territories	Count	Percent
1	United States	521	39.5%
2	China	441	33.5%
3	Germany	90	6.8%
4	Canada	41	3.1%
5	Japan	35	2.7%
6	France	23	1.7%
7	India	23	1.7%
8	United Kingdom	21	1.6%
9	Latvia	14	1.1%
10	Mexico	14	1.1%
11	Korea, Republic of	13	1%
12	Australia	10	0.8%
13	Taiwan	7	0.5%
14	Hong Kong	5	0.4%
15	Netherlands	4	0.3%
16	Argentina	4	0.3%
17	Cyprus	4	0.3%
18	Ukraine	4	0.3%
19	Turkey	3	0.2%
20	Indonesia	3	0.2%
21	Iran, Islamic Republic of	3	0.2%
22	Belgium	3	0.2%
23	Brazil	3	0.2%
24	Bulgaria	3	0.2%
25	Mongolia	3	0.2%
26	Italy	3	0.2%
27	Lithuania	2	0.2%
28	Poland	2	0.2%
29	Singapore	2	0.2%
30	South Africa	2	0.2%
31	Ireland	2	0.2%
32	Thailand	2	0.2%
33	Denmark	1	0.1%
34	Egypt	1	0.1%
35	Greece	1	0.1%
36	Colombia	1	0.1%
37	Russia	1	0.1%
38	Norway	1	0.1%
39	Pakistan	1	0.1%
40	Kenya	1	0.1%