Rank	Countries/Territories	Count	Percent
1	United States	538	31%
2	China	410	23.6%
3	Korea, Republic of	158	9.1%
4	Germany	141	8.1%
5	Russia	75	4.3%
6	Latvia	49	2.8%
7	France	49	2.8%
8	India	47	2.7%
9	Japan	41	2.4%
10	Canada	36	2.1%
11	Netherlands	24	1.4%
12	Italy	15	0.9%
13	Poland	15	0.9%
14	Singapore	13	0.7%
15	Cyprus	11	0.6%
16	Turkey	10	0.6%
17	Indonesia	9	0.5%
18	Ireland	9	0.5%
19	Iran, Islamic Republic of	7	0.4%
20	Colombia	6	0.3%
21	Armenia	6	0.3%
22	Australia	6	0.3%
23	Brazil	5	0.3%
24	Argentina	4	0.2%
25	Malaysia	4	0.2%
26	Slovakia	4	0.2%
27	South Africa	4	0.2%
28	Spain	4	0.2%
29	United Kingdom	4	0.2%
30	Taiwan	4	0.2%
31	Romania	3	0.2%
32	New Zealand	3	0.2%
33	Nigeria	3	0.2%
34	Mongolia	2	0.1%
35	Bangladesh	2	0.1%
36	Egypt	2	0.1%
37	Hong Kong	2	0.1%
38	Thailand	2	0.1%
39	Pakistan	2	0.1%
40	Ukraine	2	0.1%
41	Viet Nam	1	0.1%
42	Iraq	1	0.1%
43	Austria	1	0.1%
44	Oman	1	0.1%
45	Switzerland	1	0.1%