Rank	Countries/Territories	Count	Percent
1	United States	332	42.6%
2	China	149	19.1%
3	Germany	80	10.3%
4	Canada	76	9.8%
5	France	18	2.3%
6	Australia	12	1.5%
7	Singapore	10	1.3%
8	Switzerland	10	1.3%
9	Korea, Republic of	7	0.9%
10	Netherlands	7	0.9%
11	India	7	0.9%
12	Hong Kong	6	0.8%
13	Romania	6	0.8%
14	Slovakia	6	0.8%
15	Turkey	5	0.6%
16	Cyprus	5	0.6%
17	Oman	4	0.5%
18	Viet Nam	4	0.5%
19	Poland	3	0.4%
20	United Kingdom	3	0.4%
21	Czech Republic	3	0.4%
22	Ireland	3	0.4%
23	Iran, Islamic Republic of	2	0.3%
24	Denmark	2	0.3%
25	Bulgaria	2	0.3%
26	Ukraine	2	0.3%
27	Norway	2	0.3%
28	Japan	2	0.3%
29	Latvia	2	0.3%
30	Malaysia	2	0.3%
31	Mongolia	1	0.1%
32	Nepal	1	0.1%
33	Jordan	1	0.1%
34	Argentina	1	0.1%
35	Bangladesh	1	0.1%
36	Belgium	1	0.1%
37	Israel	1	0.1%