Rank	Countries/Territories	Count	Percent
1	United States	420	31.8%
2	China	409	30.9%
3	Germany	83	6.3%
4		45	3.4%
5	Russia	38	2.9%
6	Czech Republic	36	2.7%
7	Australia	32	2.4%
8	United Kingdom	29	2.2%
9	Japan	27	2%
10	France	23	1.7%
11	Singapore	13	1%
12	Hong Kong	13	1%
13	India	12	0.9%
14	Netherlands	12	0.9%
15	Korea, Republic of	9	0.7%
16	Canada	9	0.7%
17	Sweden	9	0.7%
18	Switzerland	8	0.6%
19	Cyprus	8	0.6%
20	Egypt	8	0.6%
21	Ireland	7	0.5%
22	Pakistan	7	0.5%
23	Italy	5	0.4%
24	Taiwan	5	0.4%
25	Viet Nam	4	0.3%
26	Poland	4	0.3%
27	Bangladesh	4	0.3%
28	Argentina	3	0.2%
29	New Zealand	3	0.2%
30	Norway	3	0.2%
31	Morocco	3	0.2%
32	Kuwait	3	0.2%
33	Latvia	3	0.2%
34	South Africa	3	0.2%
35	Tunisia	3	0.2%
36	Turkey	2	0.2%
37	Ukraine	2	0.2%
38	Thailand	2	0.2%
39	Bosnia and Herzegovina	2	0.2%
40	Indonesia	2	0.2%
41	Greece	1	0.1%
42	Brazil	1	0.1%
43	Burkina Faso	1	0.1%
44	Colombia	1	0.1%
45	Malaysia	1	0.1%
46	Malta	1	0.1%
47	Romania	1	0.1%
48	Slovakia	1	0.1%
49	Saudi Arabia	1	0.1%