Rank	Countries/Territories	Count	Percent
1	United States	638	50.4%
2	China	291	23%
3	Germany	60	4.7%
4	Japan	43	3.4%
5	Korea, Republic of	23	1.8%
6	Netherlands	17	1.3%
7	South Africa	16	1.3%
8	India	16	1.3%
9	Russia	15	1.2%
10	Latvia	14	1.1%
11	Canada	13	1%
12	Malaysia	10	0.8%
13	Senegal	9	0.7%
14	Australia	8	0.6%
15	United Kingdom	8	0.6%
16	Singapore	7	0.6%
17	Italy	7	0.6%
18	Denmark	6	0.5%
19	Egypt	5	0.4%
20	Hong Kong	5	0.4%
21	Brazil	5	0.4%
22	Taiwan	5	0.4%
23	Turkey	5	0.4%
24	Puerto Rico	4	0.3%
25	Cyprus	4	0.3%
26	France	4	0.3%
27	Iceland	3	0.2%
28	Iran, Islamic Republic of	3	0.2%
29	Ireland	3	0.2%
30	Israel	2	0.2%
31	Czech Republic	2	0.2%
32	Thailand	2	0.2%
33	Norway	2	0.2%
34	Poland	2	0.2%
35	Portugal	2	0.2%
36	Ukraine	2	0.2%
37	Mongolia	1	0.1%
38	Tunisia	1	0.1%
39	Sweden	1	0.1%
40	Croatia	1	0.1%
41	Argentina	1	0.1%
42	Austria	1	0.1%