Rank	Countries/Territories	Count	Percent
1	United States	301	28.7%
2	China	257	24.5%
3	Russia	135	12.9%
4	Germany	93	8.9%
5	Singapore	29	2.8%
6	India	23	2.2%
7	France	22	2.1%
8	Japan	17	1.6%
9	Latvia	16	1.5%
10	United Kingdom	16	1.5%
11	South Africa	12	1.1%
12	Israel	12	1.1%
13	Australia	12	1.1%
14	Canada	10	1%
15	Hong Kong	8	0.8%
16	Korea, Republic of	8	0.8%
17	Egypt	6	0.6%
18	Argentina	6	0.6%
19	Saudi Arabia	6	0.6%
20	Taiwan	5	0.5%
21	Romania	5	0.5%
22	Poland	4	0.4%
23	Netherlands	4	0.4%
24	Brazil	4	0.4%
25	Czech Republic	3	0.3%
26	Thailand	3	0.3%
27	Turkey	3	0.3%
28	Switzerland	3	0.3%
29	Spain	2	0.2%
30	Ukraine	2	0.2%
31	Bulgaria	2	0.2%
32	Bahrain	2	0.2%
33	Mexico	2	0.2%
34	Italy	2	0.2%
35	Indonesia	1	0.1%
36	Iran, Islamic Republic of	1	0.1%
37	Ireland	1	0.1%
38	Mongolia	1	0.1%
39	Malaysia	1	0.1%
40	Mali	1	0.1%
41	Norway	1	0.1%
42	Belgium	1	0.1%
43	Algeria	1	0.1%
44	Cyprus	1	0.1%
45	Ecuador	1	0.1%
46	Finland	1	0.1%
47	Slovakia	1	0.1%
48	Venezuela, Bolivarian Republic of	1	0.1%