Rank	Countries/Territories	Count	Percent
1	United States	323	30.2%
2	China	290	27.1%
3	Germany	122	11.4%
4	Japan	40	3.7%
5	Netherlands	32	3%
6	France	25	2.3%
7	Bulgaria	18	1.7%
8	Iran, Islamic Republic of	16	1.5%
9	Sweden	14	1.3%
10	Russia	12	1.1%
11	Greece	12	1.1%
12	Kenya	11	1%
13	Nigeria	10	0.9%
14	Hong Kong	10	0.9%
15	Egypt	9	0.8%
16	Canada	9	0.8%
17	United Kingdom	9	0.8%
18	Korea, Republic of	8	0.7%
19	Singapore	8	0.7%
20	Colombia	7	0.7%
21	Cyprus	7	0.7%
22	Spain	7	0.7%
23	Portugal	7	0.7%
24	Australia	6	0.6%
25	Ecuador	6	0.6%
26	Ireland	5	0.5%
27	Poland	3	0.3%
28	Slovakia	3	0.3%
29	Lithuania	3	0.3%
30	Argentina	3	0.3%
31	India	3	0.3%
32	Chile	3	0.3%
33	Turkey	3	0.3%
34	Uganda	3	0.3%
35	Ukraine	2	0.2%
36	United Arab Emirates	2	0.2%
37	Taiwan	2	0.2%
38	Viet Nam	2	0.2%
39	Czech Republic	2	0.2%
40	Mexico	2	0.2%
41	Norway	2	0.2%
42	Philippines	2	0.2%
43	South Africa	2	0.2%
44	Italy	2	0.2%
45	Israel	1	0.1%
46	Brazil	1	0.1%
47	Indonesia	1	0.1%
48	Romania	1	0.1%