Rank	Countries/Territories	Count	Percent
1	United States	178	23.5%
2	China	142	18.8%
3	Germany	81	10.7%
4	India	42	5.6%
5	Korea, Republic of	40	5.3%
6	Russia	40	5.3%
7	France	29	3.8%
8	Taiwan	28	3.7%
9	Brazil	20	2.6%
10		18	2.4%
11	Iran, Islamic Republic of	13	1.7%
12	Latvia	13	1.7%
13	Switzerland	13	1.7%
14	Netherlands	12	1.6%
15	Japan	9	1.2%
16	Portugal	8	1.1%
17	United Kingdom	7	0.9%
18	Nigeria	6	0.8%
19	Hong Kong	6	0.8%
20	Canada	5	0.7%
21	Thailand	5	0.7%
22	Italy	4	0.5%
23	Mexico	3	0.4%
24	Colombia	3	0.4%
25	Ukraine	3	0.4%
26	Cuba	2	0.3%
27	Cyprus	2	0.3%
28	Albania	2	0.3%
29	Egypt	2	0.3%
30	Iraq	2	0.3%
31	Ireland	2	0.3%
32	Sweden	2	0.3%
33	Romania	2	0.3%
34	Malaysia	2	0.3%
35	Kyrgyzstan	1	0.1%
36	Norway	1	0.1%
37	Singapore	1	0.1%
38	Slovakia	1	0.1%
39	Israel	1	0.1%
40	Australia	1	0.1%
41	Bangladesh	1	0.1%
42	Ecuador	1	0.1%
43	Turkey	1	0.1%
44	Viet Nam	1	0.1%