Rank	Countries/Territories	Count	Percent
1	United States	257	38.5%
2	China	191	28.6%
3	Germany	61	9.1%
4	Pakistan	24	3.6%
5	India	14	2.1%
6	Canada	12	1.8%
7	Korea, Republic of	10	1.5%
8	Singapore	10	1.5%
9	United Kingdom	9	1.3%
10	France	9	1.3%
11	Portugal	8	1.2%
12	Cyprus	6	0.9%
13	Malaysia	6	0.9%
14	Netherlands	6	0.9%
15	Japan	4	0.6%
16	Iran, Islamic Republic of	4	0.6%
17	Australia	4	0.6%
18	Turkey	4	0.6%
19	Romania	3	0.4%
20	Russia	3	0.4%
21	Spain	3	0.4%
22	Brazil	3	0.4%
23	Ireland	3	0.4%
24	Italy	3	0.4%
25	Greece	2	0.3%
26	Hong Kong	2	0.3%
27	South Africa	2	0.3%
28	Switzerland	1	0.1%
29	Saudi Arabia	1	0.1%
30	Ukraine	1	0.1%
31	Georgia	1	0.1%