Rank	Countries/Territories	Count	Percent
1	United States	549	52.4%
2	China	216	20.6%
3	Romania	63	6%
4	Germany	25	2.4%
5	India	24	2.3%
6	Korea, Republic of	14	1.3%
7	Australia	14	1.3%
8	Netherlands	13	1.2%
9	Russia	11	1%
10	Canada	11	1%
11	Japan	11	1%
12	United Kingdom	11	1%
13	France	10	1%
14	Philippines	10	1%
15	Singapore	9	0.9%
16	Portugal	7	0.7%
17	Ireland	7	0.7%
18	Norway	6	0.6%
19	Czech Republic	4	0.4%
20	Brazil	4	0.4%
21	Austria	3	0.3%
22	Iran, Islamic Republic of	3	0.3%
23	Malaysia	2	0.2%
24	Sweden	2	0.2%
25	Chile	2	0.2%
26	Hong Kong	2	0.2%
27	Taiwan	2	0.2%
28	Viet Nam	2	0.2%
29	Ukraine	1	0.1%
30	Argentina	1	0.1%
31	Finland	1	0.1%
32	Cyprus	1	0.1%
33	Bulgaria	1	0.1%
34	Bahrain	1	0.1%
35	Bangladesh	1	0.1%
36	Switzerland	1	0.1%
37	Spain	1	0.1%
38	Saudi Arabia	1	0.1%
39	Italy	1	0.1%