Rank	Countries/Territories	Count	Percent
1	United States	521	44.8%
2	China	430	37%
3	Germany	84	7.2%
4	Japan	26	2.2%
5	Singapore	24	2.1%
6	Korea, Republic of	10	0.9%
7	France	9	0.8%
8	Hong Kong	7	0.6%
9	Australia	4	0.3%
10	Cyprus	4	0.3%
11	Netherlands	4	0.3%
12	Canada	3	0.3%
13	India	3	0.3%
14	Turkey	3	0.3%
15	South Africa	3	0.3%
16	Sweden	3	0.3%
17	United Kingdom	3	0.3%
18	Venezuela, Bolivarian Republic of	2	0.2%
19	Spain	2	0.2%
20	Taiwan	2	0.2%
21	Ireland	2	0.2%
22	Argentina	2	0.2%
23	Bangladesh	2	0.2%
24	Lithuania	2	0.2%
25	Mexico	2	0.2%
26	Mongolia	1	0.1%
27	Poland	1	0.1%
28	Russia	1	0.1%
29	Latvia	1	0.1%
30	Ukraine	1	0.1%
31	Switzerland	1	0.1%