Rank	Countries/Territories	Count	Percent
1	United States	567	33.9%
2	China	422	25.2%
3	Germany	119	7.1%
4	Iran, Islamic Republic of	65	3.9%
5	United Kingdom	53	3.2%
6	Australia	46	2.7%
7	Latvia	44	2.6%
8	Spain	42	2.5%
9	Hong Kong	40	2.4%
10	Turkey	32	1.9%
11	Taiwan	30	1.8%
12	India	30	1.8%
13	Canada	21	1.3%
14	Japan	19	1.1%
15	Netherlands	18	1.1%
16	France	17	1%
17	Singapore	11	0.7%
18	Korea, Republic of	10	0.6%
19	Macao	9	0.5%
20	Kenya	8	0.5%
21	Ireland	6	0.4%
22	South Africa	6	0.4%
23	Argentina	6	0.4%
24	Cyprus	5	0.3%
25	Bulgaria	4	0.2%
26	Austria	4	0.2%
27	Denmark	3	0.2%
28	Philippines	3	0.2%
29	Mongolia	3	0.2%
30	Estonia	3	0.2%
31	Ukraine	3	0.2%
32	Sweden	3	0.2%
33	Switzerland	3	0.2%
34	Thailand	2	0.1%
35	Serbia	2	0.1%
36	Italy	2	0.1%
37	New Zealand	2	0.1%
38	Norway	2	0.1%
39	Bangladesh	2	0.1%
40	Brazil	2	0.1%
41	Belgium	1	0.1%
42	Ecuador	1	0.1%
43	Indonesia	1	0.1%
44	Russia	1	0.1%
45	Malaysia	1	0.1%
46	Sri Lanka	1	0.1%