Rank	Countries/Territories	Count	Percent
1	United States	272	29.5%
2	China	193	20.9%
3	Germany	75	8.1%
4	India	53	5.7%
5	United Kingdom	45	4.9%
6	Netherlands	30	3.3%
7	Brazil	24	2.6%
8	Ireland	21	2.3%
9	Bulgaria	20	2.2%
10	Canada	19	2.1%
11	Japan	15	1.6%
12	Nigeria	8	0.9%
13	Australia	8	0.9%
14	Malaysia	8	0.9%
15	Mexico	7	0.8%
16	Korea, Republic of	7	0.8%
17	Ghana	6	0.7%
18	South Africa	6	0.7%
19	Sweden	6	0.7%
20	Spain	5	0.5%
21	Chile	5	0.5%
22	Colombia	5	0.5%
23	Italy	5	0.5%
24	Indonesia	4	0.4%
25	Egypt	4	0.4%
26	Belgium	4	0.4%
27	Cameroon	3	0.3%
28	Cyprus	3	0.3%
29	Denmark	3	0.3%
30	Iran, Islamic Republic of	3	0.3%
31	Kenya	3	0.3%
32	Switzerland	3	0.3%
33	Philippines	3	0.3%
34	Russia	3	0.3%
35	Ukraine	3	0.3%
36	United Arab Emirates	3	0.3%
37	Trinidad and Tobago	2	0.2%
38	Turkey	2	0.2%
39	Tanzania, United Republic of	2	0.2%
40	Macao	2	0.2%
41	Portugal	2	0.2%
42	Argentina	2	0.2%
43	Kyrgyzstan	2	0.2%
44	Paraguay	2	0.2%
45	Peru	2	0.2%
46	France	2	0.2%
47	Jordan	2	0.2%
48	Hong Kong	2	0.2%
49	Czech Republic	2	0.2%
50	Hungary	1	0.1%
51	Ecuador	1	0.1%
52	Georgia	1	0.1%
53	Latvia	1	0.1%
54	Thailand	1	0.1%
55	Taiwan	1	0.1%
56	Saudi Arabia	1	0.1%
57	Singapore	1	0.1%
58	Slovakia	1	0.1%
59	Poland	1	0.1%
60	Uganda	1	0.1%
61	Zambia	1	0.1%