Rank	Countries/Territories	Count	Percent
1	United States	436	37.6%
2	China	311	26.8%
3	Germany	81	7%
4	Korea, Republic of	28	2.4%
5	Japan	25	2.2%
6	India	24	2.1%
7	Singapore	21	1.8%
8	Russia	19	1.6%
9	France	17	1.5%
10	Netherlands	15	1.3%
11	United Kingdom	15	1.3%
12	Switzerland	11	0.9%
13	Pakistan	10	0.9%
14	Brazil	10	0.9%
15	Iran, Islamic Republic of	9	0.8%
16	Hong Kong	8	0.7%
17	Cyprus	8	0.7%
18	Romania	8	0.7%
19	Ireland	8	0.7%
20	Canada	7	0.6%
21	Australia	6	0.5%
22	Bosnia and Herzegovina	6	0.5%
23	South Africa	6	0.5%
24	Spain	6	0.5%
25	Turkey	5	0.4%
26	Ethiopia	5	0.4%
27	Italy	5	0.4%
28	Peru	5	0.4%
29	Jordan	4	0.3%
30	Taiwan	4	0.3%
31	Sweden	4	0.3%
32	Uruguay	4	0.3%
33	Malaysia	3	0.3%
34	Philippines	3	0.3%
35	Nigeria	3	0.3%
36	Argentina	3	0.3%
37	Indonesia	2	0.2%
38	Israel	2	0.2%
39	Ukraine	2	0.2%
40	Slovenia	1	0.1%
41	Viet Nam	1	0.1%
42	Kenya	1	0.1%
43	Mexico	1	0.1%
44	Mongolia	1	0.1%
45	Norway	1	0.1%
46	Poland	1	0.1%
47	Portugal	1	0.1%
48	Iraq	1	0.1%
49	Albania	1	0.1%
50	Cameroon	1	0.1%