Rank	Countries/Territories	Count	Percent
1	United States	404	39.6%
2	China	234	22.9%
3	Germany	73	7.1%
4	India	60	5.9%
5	France	51	5%
6	Japan	35	3.4%
7	United Kingdom	25	2.4%
8	Canada	24	2.4%
9	Korea, Republic of	17	1.7%
10	Bulgaria	13	1.3%
11	Ireland	8	0.8%
12	Singapore	8	0.8%
13	Australia	7	0.7%
14	Bangladesh	6	0.6%
15	Cyprus	6	0.6%
16	Sweden	5	0.5%
17	Senegal	5	0.5%
18	Netherlands	5	0.5%
19	Russia	4	0.4%
20	Denmark	4	0.4%
21	Iran, Islamic Republic of	4	0.4%
22	Hong Kong	3	0.3%
23	Ukraine	3	0.3%
24	Mexico	3	0.3%
25	Romania	2	0.2%
26	Hungary	2	0.2%
27	Austria	2	0.2%
28	Argentina	2	0.2%
29	Brazil	2	0.2%
30	Belgium	1	0.1%
31	Norway	1	0.1%
32	Lebanon	1	0.1%
33	Lithuania	1	0.1%