Rank	Countries/Territories	Count	Percent
1	United States	506	38.3%
2	China	348	26.3%
3	Romania	86	6.5%
4	Germany	65	4.9%
5	Japan	52	3.9%
6	France	29	2.2%
7	United Kingdom	25	1.9%
8	Singapore	22	1.7%
9	Thailand	21	1.6%
10	Norway	19	1.4%
11	Belgium	19	1.4%
12	Canada	17	1.3%
13	Netherlands	15	1.1%
14	South Africa	13	1%
15	Ireland	10	0.8%
16	Cyprus	8	0.6%
17	Hungary	7	0.5%
18	Iran, Islamic Republic of	6	0.5%
19	Turkey	6	0.5%
20	Denmark	5	0.4%
21	Egypt	4	0.3%
22	Mauritius	4	0.3%
23	Taiwan	4	0.3%
24	Tunisia	3	0.2%
25	Hong Kong	3	0.2%
26	Australia	3	0.2%
27	Bulgaria	3	0.2%
28	Ukraine	3	0.2%
29	Austria	2	0.2%
30	Brazil	2	0.2%
31	India	2	0.2%
32	Slovenia	2	0.2%
33	Russia	2	0.2%
34	Philippines	2	0.2%
35	Korea, Republic of	1	0.1%
36	Lithuania	1	0.1%
37	Argentina	1	0.1%
38	Colombia	1	0.1%