Rank	Countries/Territories	Count	Percent
1	United States	421	47.9%
2	China	170	19.4%
3	Germany	104	11.8%
4	Canada	28	3.2%
5	France	19	2.2%
6	Slovakia	14	1.6%
7	Korea, Republic of	13	1.5%
8	Netherlands	10	1.1%
9	Romania	10	1.1%
10	Ukraine	10	1.1%
11	Japan	10	1.1%
12	Turkey	9	1%
13	Singapore	8	0.9%
14	Taiwan	7	0.8%
15	India	5	0.6%
16	Cyprus	5	0.6%
17	Guatemala	4	0.5%
18	Italy	4	0.5%
19	Switzerland	4	0.5%
20	Brazil	3	0.3%
21	Argentina	2	0.2%
22	Iran, Islamic Republic of	2	0.2%
23	Palestine, State of	2	0.2%
24	Poland	2	0.2%
25	New Zealand	2	0.2%
26	Norway	1	0.1%
27	Malaysia	1	0.1%
28	Spain	1	0.1%
29	Ireland	1	0.1%
30	Israel	1	0.1%
31	Jordan	1	0.1%
32	Australia	1	0.1%
33	Belarus	1	0.1%
34	Hong Kong	1	0.1%
35	Ethiopia	1	0.1%