Rank	Countries/Territories	Count	Percent
1	United States	407	40%
2	China	319	31.4%
3	Germany	155	15.2%
4	Canada	25	2.5%
5	Korea, Republic of	15	1.5%
6	France	10	1%
7	Cyprus	9	0.9%
8	Brazil	8	0.8%
9	Japan	8	0.8%
10	Ukraine	7	0.7%
11	United Kingdom	6	0.6%
12	Ireland	5	0.5%
13	Netherlands	5	0.5%
14	India	5	0.5%
15	Hong Kong	4	0.4%
16	Russia	4	0.4%
17	Singapore	3	0.3%
18	Togo	2	0.2%
19	Indonesia	2	0.2%
20	Iran, Islamic Republic of	2	0.2%
21	Nigeria	2	0.2%
22	Philippines	2	0.2%
23	Australia	2	0.2%
24	Belgium	2	0.2%
25	Czech Republic	2	0.2%
26	Georgia	1	0.1%
27	Turkey	1	0.1%
28	Slovakia	1	0.1%
29	South Africa	1	0.1%
30	Spain	1	0.1%
31	Sweden	1	0.1%