Rank	Countries/Territories	Count	Percent
1	United States	292	35.4%
2	China	215	26.1%
3	Bulgaria	104	12.6%
4	Germany	27	3.3%
5	Singapore	27	3.3%
6	Russia	22	2.7%
7	India	16	1.9%
8	France	12	1.5%
9	Spain	10	1.2%
10	Taiwan	7	0.8%
11	Israel	7	0.8%
12	Korea, Republic of	7	0.8%
13	Japan	6	0.7%
14	Canada	6	0.7%
15	Netherlands	5	0.6%
16	Thailand	5	0.6%
17	United Kingdom	5	0.6%
18	Sri Lanka	4	0.5%
19	Greece	4	0.5%
20	Poland	3	0.4%
21	Serbia	3	0.4%
22	South Africa	2	0.2%
23	Sweden	2	0.2%
24	Turkey	2	0.2%
25	Romania	2	0.2%
26	Norway	2	0.2%
27	Pakistan	2	0.2%
28	Peru	2	0.2%
29	Saudi Arabia	2	0.2%
30	Egypt	2	0.2%
31	Iran, Islamic Republic of	2	0.2%
32	Australia	2	0.2%
33	Croatia	2	0.2%
34	Cyprus	1	0.1%
35	Ecuador	1	0.1%
36	Bangladesh	1	0.1%
37	Chile	1	0.1%
38	Ireland	1	0.1%
39	Gambia	1	0.1%
40	Hong Kong	1	0.1%
41	Hungary	1	0.1%
42	Italy	1	0.1%
43	North Macedonia	1	0.1%
44	Lebanon	1	0.1%
45	Lithuania	1	0.1%
46	Slovakia	1	0.1%