Rank	Countries/Territories	Count	Percent
1	United States	407	46.1%
2	China	228	25.8%
3	Germany	77	8.7%
4	Canada	14	1.6%
5	Switzerland	13	1.5%
6	Netherlands	12	1.4%
7	Ukraine	11	1.2%
8	India	10	1.1%
9	France	9	1%
10	Taiwan	8	0.9%
11	Spain	8	0.9%
12	Korea, Republic of	7	0.8%
13	Cyprus	7	0.8%
14	Australia	7	0.8%
15	Austria	5	0.6%
16	Thailand	5	0.6%
17	Japan	5	0.6%
18	Singapore	5	0.6%
19	Portugal	4	0.5%
20	Egypt	4	0.5%
21	Norway	4	0.5%
22	Sweden	4	0.5%
23	Brazil	4	0.5%
24	Iran, Islamic Republic of	4	0.5%
25	Ireland	2	0.2%
26	Lithuania	2	0.2%
27	Malaysia	2	0.2%
28	Mexico	2	0.2%
29	Myanmar	2	0.2%
30	Bosnia and Herzegovina	2	0.2%
31	Chile	2	0.2%
32	Philippines	2	0.2%
33	Russia	1	0.1%
34	Saudi Arabia	1	0.1%
35	Ecuador	1	0.1%
36	Argentina	1	0.1%
37	Italy	1	0.1%