Rank	Countries/Territories	Count	Percent
1	United States	414	45.5%
2	China	255	28%
3	Germany	51	5.6%
4	India	46	5.1%
5	Bulgaria	22	2.4%
6	Ireland	12	1.3%
7	France	11	1.2%
8	Korea, Republic of	9	1%
9	Netherlands	7	0.8%
10	Japan	7	0.8%
11	Pakistan	6	0.7%
12	Hong Kong	5	0.5%
13	Australia	5	0.5%
14	Brazil	5	0.5%
15	Cyprus	4	0.4%
16	Taiwan	4	0.4%
17	Ukraine	4	0.4%
18	United Kingdom	4	0.4%
19	Romania	3	0.3%
20	Italy	3	0.3%
21	Argentina	3	0.3%
22	Canada	3	0.3%
23	Uzbekistan	3	0.3%
24	Spain	3	0.3%
25	Belgium	2	0.2%
26	Egypt	2	0.2%
27	Russia	2	0.2%
28	Portugal	2	0.2%
29	Nigeria	2	0.2%
30	Mauritius	2	0.2%
31	Mongolia	2	0.2%
32	Nepal	2	0.2%
33	Mexico	1	0.1%
34	Singapore	1	0.1%
35	South Africa	1	0.1%
36	Thailand	1	0.1%
37	Colombia	1	0.1%