Rank	Countries/Territories	Count	Percent
1	United States	271	38%
2	China	159	22.3%
3	Germany	68	9.5%
4	Japan	38	5.3%
5	Russia	26	3.6%
6	Latvia	16	2.2%
7	Korea, Republic of	15	2.1%
8	India	13	1.8%
9	Greece	12	1.7%
10	Netherlands	10	1.4%
11	Brazil	9	1.3%
12	Taiwan	7	1%
13	Italy	6	0.8%
14	United Kingdom	6	0.8%
15	Senegal	6	0.8%
16	Hong Kong	6	0.8%
17	France	6	0.8%
18	Israel	5	0.7%
19	Canada	4	0.6%
20	Cyprus	4	0.6%
21	Thailand	3	0.4%
22	Spain	3	0.4%
23	Serbia	2	0.3%
24	Singapore	2	0.3%
25	Norway	2	0.3%
26	Malaysia	2	0.3%
27	Colombia	2	0.3%
28	Azerbaijan	2	0.3%
29	Iran, Islamic Republic of	2	0.3%
30	Ireland	2	0.3%
31	Australia	1	0.1%
32	Denmark	1	0.1%
33	South Africa	1	0.1%
34	Switzerland	1	0.1%
35	Turkmenistan	1	0.1%