Rank	Countries/Territories	Count	Percent
1	United States	338	44.8%
2	China	220	29.2%
3	Germany	42	5.6%
4	France	27	3.6%
5	Japan	19	2.5%
6	India	17	2.3%
7	Netherlands	16	2.1%
8	Nigeria	10	1.3%
9	Singapore	8	1.1%
10	Canada	7	0.9%
11	Brazil	6	0.8%
12	Hong Kong	4	0.5%
13	Hungary	3	0.4%
14	Bulgaria	3	0.4%
15	Austria	3	0.4%
16	Denmark	3	0.4%
17	Italy	3	0.4%
18	Mexico	3	0.4%
19	Turkey	3	0.4%
20	Iran, Islamic Republic of	2	0.3%
21	Spain	2	0.3%
22	Sweden	2	0.3%
23	Egypt	2	0.3%
24	Cyprus	2	0.3%
25	Kazakhstan	2	0.3%
26	Latvia	2	0.3%
27	Malaysia	1	0.1%
28	Australia	1	0.1%
29	Thailand	1	0.1%
30	Ukraine	1	0.1%
31	Viet Nam	1	0.1%