Rank	Countries/Territories	Count	Percent
1	United States	395	38.1%
2	Bulgaria	126	12.2%
3	China	121	11.7%
4	India	53	5.1%
5	Germany	37	3.6%
6	United Kingdom	36	3.5%
7	South Africa	28	2.7%
8	Italy	25	2.4%
9	Korea, Republic of	20	1.9%
10	Brazil	19	1.8%
11	Netherlands	16	1.5%
12	Canada	11	1.1%
13	Russia	10	1%
14	Spain	9	0.9%
15	Turkey	9	0.9%
16	Australia	9	0.9%
17	Hong Kong	8	0.8%
18	Finland	8	0.8%
19	Poland	8	0.8%
20	Japan	8	0.8%
21	Slovakia	7	0.7%
22	Switzerland	6	0.6%
23	Malaysia	6	0.6%
24	Ireland	5	0.5%
25	Iran, Islamic Republic of	5	0.5%
26	Austria	4	0.4%
27	Bangladesh	3	0.3%
28	Belgium	3	0.3%
29	Hungary	3	0.3%
30	New Zealand	3	0.3%
31	Mexico	3	0.3%
32	Ukraine	3	0.3%
33	Tunisia	3	0.3%
34	Romania	2	0.2%
35	Saudi Arabia	2	0.2%
36	Serbia	2	0.2%
37	Singapore	2	0.2%
38	Norway	2	0.2%
39	Iraq	2	0.2%
40	France	2	0.2%
41	Argentina	2	0.2%
42	Czech Republic	1	0.1%
43	Portugal	1	0.1%
44	Moldova, Republic of	1	0.1%
45	Monaco	1	0.1%
46	Mongolia	1	0.1%
47	Israel	1	0.1%
48	Mauritius	1	0.1%
49	Lithuania	1	0.1%
50	Taiwan	1	0.1%
51	Thailand	1	0.1%
52	Viet Nam	1	0.1%