Rank	Countries/Territories	Count	Percent
1	United States	430	38.3%
2	China	300	26.7%
3	Germany	72	6.4%
4	Korea, Republic of	28	2.5%
5	Japan	25	2.2%
6	India	21	1.9%
7	Singapore	20	1.8%
8	Russia	19	1.7%
9	France	17	1.5%
10	Netherlands	15	1.3%
11	United Kingdom	13	1.2%
12	Switzerland	11	1%
13	Pakistan	10	0.9%
14	Brazil	10	0.9%
15	Hong Kong	8	0.7%
16	Ireland	8	0.7%
17	Romania	8	0.7%
18	Iran, Islamic Republic of	7	0.6%
19	Canada	7	0.6%
20	Cyprus	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	Taiwan	4	0.4%
30	Sweden	4	0.4%
31	Uruguay	4	0.4%
32	Philippines	3	0.3%
33	Nigeria	3	0.3%
34	Jordan	3	0.3%
35	Malaysia	3	0.3%
36	Argentina	3	0.3%
37	Israel	2	0.2%
38	Indonesia	2	0.2%
39	Ukraine	2	0.2%
40	Slovenia	1	0.1%
41	Viet Nam	1	0.1%
42	Albania	1	0.1%
43	Cameroon	1	0.1%
44	Mexico	1	0.1%
45	Mongolia	1	0.1%
46	Kenya	1	0.1%
47	Norway	1	0.1%
48	Poland	1	0.1%
49	Portugal	1	0.1%