Rank	Countries/Territories	Count	Percent
1	United States	502	43.2%
2	China	280	24.1%
3	Germany	87	7.5%
4	Romania	66	5.7%
5	Canada	35	3%
6	Japan	34	2.9%
7	India	21	1.8%
8	Netherlands	19	1.6%
9	Spain	19	1.6%
10	Korea, Republic of	14	1.2%
11	United Kingdom	13	1.1%
12	Czech Republic	9	0.8%
13	Cyprus	6	0.5%
14	Malaysia	6	0.5%
15	Italy	6	0.5%
16	Singapore	5	0.4%
17	Argentina	4	0.3%
18	Ireland	4	0.3%
19	Hong Kong	3	0.3%
20		3	0.3%
21	Australia	2	0.2%
22	Bangladesh	2	0.2%
23	Hungary	2	0.2%
24	Iran, Islamic Republic of	2	0.2%
25	Pakistan	2	0.2%
26	Taiwan	2	0.2%
27	France	2	0.2%
28	Jordan	2	0.2%
29	Nigeria	2	0.2%
30	Norway	1	0.1%
31	Mongolia	1	0.1%
32	Ukraine	1	0.1%
33	Switzerland	1	0.1%
34	Israel	1	0.1%
35	Denmark	1	0.1%
36	Belgium	1	0.1%
37	Brazil	1	0.1%